81328000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:82

約数の個数: 256

約数和(自身を含む): 240589440

約数和(自身を除く): 159261440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 23, 25, 26, 32, 34, 40, 46, 50, 52, 64, 65, 68, 80, 85, 92, 100, 104, 115, 125, 128, 130, 136, 160, 170, 184, 200, 208, 221, 230, 250, 260, 272, 299, 320, 325, 340, 368, 391, 400, 416, 425, 442, 460, 500, 520, 544, 575, 598, 640, 650, 680, 736, 782, 800, 832, 850, 884, 920, 1000, 1040, 1088, 1105, 1150, 1196, 1300, 1360, 1472, 1495, 1564, 1600, 1625, 1664, 1700, 1768, 1840, 1955, 2000, 2080, 2125, 2176, 2210, 2300, 2392, 2600, 2720, 2875, 2944, 2990, 3128, 3200, 3250, 3400, 3536, 3680, 3910, 4000, 4160, 4250, 4420, 4600, 4784, 5083, 5200, 5440, 5525, 5750, 5980, 6256, 6500, 6800, 7072, 7360, 7475, 7820, 8000, 8320, 8500, 8840, 9200, 9568, 9775, 10166, 10400, 10880, 11050, 11500, 11960, 12512, 13000, 13600, 14144, 14720, 14950, 15640, 16000, 17000, 17680, 18400, 19136, 19550, 20332, 20800, 22100, 23000, 23920, 25024, 25415, 26000, 27200, 27625, 28288, 29900, 31280, 34000, 35360, 36800, 37375, 38272, 39100, 40664, 41600, 44200, 46000, 47840, 48875, 50048, 50830, 52000, 54400, 55250, 59800, 62560, 68000, 70720, 73600, 74750, 78200, 81328, 88400, 92000, 95680, 97750, 101660, 104000, 110500, 119600, 125120, 127075, 136000, 141440, 149500, 156400, 162656, 176800, 184000, 191360, 195500, 203320, 208000, 221000, 239200, 250240, 254150, 272000, 299000, 312800, 325312, 353600, 368000, 391000, 406640, 442000, 478400, 508300, 598000, 625600, 635375, 650624, 707200, 782000, 813280, 884000, 956800, 1016600, 1196000, 1251200, 1270750, 1564000, 1626560, 1768000, 2033200, 2392000, 2541500, 3128000, 3253120, 3536000, 4066400, 4784000, 5083000, 6256000, 8132800, 10166000, 16265600, 20332000, 40664000, 81328000]

約数ペア:

[(1, 81328000), (2, 40664000), (4, 20332000), (5, 16265600), (8, 10166000), (10, 8132800), (13, 6256000), (16, 5083000), (17, 4784000), (20, 4066400), (23, 3536000), (25, 3253120), (26, 3128000), (32, 2541500), (34, 2392000), (40, 2033200), (46, 1768000), (50, 1626560), (52, 1564000), (64, 1270750), (65, 1251200), (68, 1196000), (80, 1016600), (85, 956800), (92, 884000), (100, 813280), (104, 782000), (115, 707200), (125, 650624), (128, 635375), (130, 625600), (136, 598000), (160, 508300), (170, 478400), (184, 442000), (200, 406640), (208, 391000), (221, 368000), (230, 353600), (250, 325312), (260, 312800), (272, 299000), (299, 272000), (320, 254150), (325, 250240), (340, 239200), (368, 221000), (391, 208000), (400, 203320), (416, 195500), (425, 191360), (442, 184000), (460, 176800), (500, 162656), (520, 156400), (544, 149500), (575, 141440), (598, 136000), (640, 127075), (650, 125120), (680, 119600), (736, 110500), (782, 104000), (800, 101660), (832, 97750), (850, 95680), (884, 92000), (920, 88400), (1000, 81328), (1040, 78200), (1088, 74750), (1105, 73600), (1150, 70720), (1196, 68000), (1300, 62560), (1360, 59800), (1472, 55250), (1495, 54400), (1564, 52000), (1600, 50830), (1625, 50048), (1664, 48875), (1700, 47840), (1768, 46000), (1840, 44200), (1955, 41600), (2000, 40664), (2080, 39100), (2125, 38272), (2176, 37375), (2210, 36800), (2300, 35360), (2392, 34000), (2600, 31280), (2720, 29900), (2875, 28288), (2944, 27625), (2990, 27200), (3128, 26000), (3200, 25415), (3250, 25024), (3400, 23920), (3536, 23000), (3680, 22100), (3910, 20800), (4000, 20332), (4160, 19550), (4250, 19136), (4420, 18400), (4600, 17680), (4784, 17000), (5083, 16000), (5200, 15640), (5440, 14950), (5525, 14720), (5750, 14144), (5980, 13600), (6256, 13000), (6500, 12512), (6800, 11960), (7072, 11500), (7360, 11050), (7475, 10880), (7820, 10400), (8000, 10166), (8320, 9775), (8500, 9568), (8840, 9200)]