31280000

素因数分解:

$2^7\times 5^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:74

約数の個数: 160

約数和(自身を含む): 86034960

約数和(自身を除く): 54754960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 25, 32, 34, 40, 46, 50, 64, 68, 80, 85, 92, 100, 115, 125, 128, 136, 160, 170, 184, 200, 230, 250, 272, 320, 340, 368, 391, 400, 425, 460, 500, 544, 575, 625, 640, 680, 736, 782, 800, 850, 920, 1000, 1088, 1150, 1250, 1360, 1472, 1564, 1600, 1700, 1840, 1955, 2000, 2125, 2176, 2300, 2500, 2720, 2875, 2944, 3128, 3200, 3400, 3680, 3910, 4000, 4250, 4600, 5000, 5440, 5750, 6256, 6800, 7360, 7820, 8000, 8500, 9200, 9775, 10000, 10625, 10880, 11500, 12512, 13600, 14375, 14720, 15640, 16000, 17000, 18400, 19550, 20000, 21250, 23000, 25024, 27200, 28750, 31280, 34000, 36800, 39100, 40000, 42500, 46000, 48875, 50048, 54400, 57500, 62560, 68000, 73600, 78200, 80000, 85000, 92000, 97750, 115000, 125120, 136000, 156400, 170000, 184000, 195500, 230000, 244375, 250240, 272000, 312800, 340000, 368000, 391000, 460000, 488750, 625600, 680000, 782000, 920000, 977500, 1251200, 1360000, 1564000, 1840000, 1955000, 3128000, 3910000, 6256000, 7820000, 15640000, 31280000]

約数ペア:

[(1, 31280000), (2, 15640000), (4, 7820000), (5, 6256000), (8, 3910000), (10, 3128000), (16, 1955000), (17, 1840000), (20, 1564000), (23, 1360000), (25, 1251200), (32, 977500), (34, 920000), (40, 782000), (46, 680000), (50, 625600), (64, 488750), (68, 460000), (80, 391000), (85, 368000), (92, 340000), (100, 312800), (115, 272000), (125, 250240), (128, 244375), (136, 230000), (160, 195500), (170, 184000), (184, 170000), (200, 156400), (230, 136000), (250, 125120), (272, 115000), (320, 97750), (340, 92000), (368, 85000), (391, 80000), (400, 78200), (425, 73600), (460, 68000), (500, 62560), (544, 57500), (575, 54400), (625, 50048), (640, 48875), (680, 46000), (736, 42500), (782, 40000), (800, 39100), (850, 36800), (920, 34000), (1000, 31280), (1088, 28750), (1150, 27200), (1250, 25024), (1360, 23000), (1472, 21250), (1564, 20000), (1600, 19550), (1700, 18400), (1840, 17000), (1955, 16000), (2000, 15640), (2125, 14720), (2176, 14375), (2300, 13600), (2500, 12512), (2720, 11500), (2875, 10880), (2944, 10625), (3128, 10000), (3200, 9775), (3400, 9200), (3680, 8500), (3910, 8000), (4000, 7820), (4250, 7360), (4600, 6800), (5000, 6256), (5440, 5750)]