7820000

素因数分解:

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

素因数の和:70

約数の個数: 120

約数和(自身を含む): 21255696

約数和(自身を除く): 13435696

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 25, 32, 34, 40, 46, 50, 68, 80, 85, 92, 100, 115, 125, 136, 160, 170, 184, 200, 230, 250, 272, 340, 368, 391, 400, 425, 460, 500, 544, 575, 625, 680, 736, 782, 800, 850, 920, 1000, 1150, 1250, 1360, 1564, 1700, 1840, 1955, 2000, 2125, 2300, 2500, 2720, 2875, 3128, 3400, 3680, 3910, 4000, 4250, 4600, 5000, 5750, 6256, 6800, 7820, 8500, 9200, 9775, 10000, 10625, 11500, 12512, 13600, 14375, 15640, 17000, 18400, 19550, 20000, 21250, 23000, 28750, 31280, 34000, 39100, 42500, 46000, 48875, 57500, 62560, 68000, 78200, 85000, 92000, 97750, 115000, 156400, 170000, 195500, 230000, 244375, 312800, 340000, 391000, 460000, 488750, 782000, 977500, 1564000, 1955000, 3910000, 7820000]

約数ペア:

[(1, 7820000), (2, 3910000), (4, 1955000), (5, 1564000), (8, 977500), (10, 782000), (16, 488750), (17, 460000), (20, 391000), (23, 340000), (25, 312800), (32, 244375), (34, 230000), (40, 195500), (46, 170000), (50, 156400), (68, 115000), (80, 97750), (85, 92000), (92, 85000), (100, 78200), (115, 68000), (125, 62560), (136, 57500), (160, 48875), (170, 46000), (184, 42500), (200, 39100), (230, 34000), (250, 31280), (272, 28750), (340, 23000), (368, 21250), (391, 20000), (400, 19550), (425, 18400), (460, 17000), (500, 15640), (544, 14375), (575, 13600), (625, 12512), (680, 11500), (736, 10625), (782, 10000), (800, 9775), (850, 9200), (920, 8500), (1000, 7820), (1150, 6800), (1250, 6256), (1360, 5750), (1564, 5000), (1700, 4600), (1840, 4250), (1955, 4000), (2000, 3910), (2125, 3680), (2300, 3400), (2500, 3128), (2720, 2875)]