686999920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{4721}}^1$

素因数の和:4858

約数の個数: 80

約数和(自身を含む): 1707399648

約数和(自身を除く): 1020399728

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 107, 136, 170, 214, 272, 340, 428, 535, 680, 856, 1070, 1360, 1712, 1819, 2140, 3638, 4280, 4721, 7276, 8560, 9095, 9442, 14552, 18190, 18884, 23605, 29104, 36380, 37768, 47210, 72760, 75536, 80257, 94420, 145520, 160514, 188840, 321028, 377680, 401285, 505147, 642056, 802570, 1010294, 1284112, 1605140, 2020588, 2525735, 3210280, 4041176, 5051470, 6420560, 8082352, 8587499, 10102940, 17174998, 20205880, 34349996, 40411760, 42937495, 68699992, 85874990, 137399984, 171749980, 343499960, 686999920]

約数ペア:

[(1, 686999920), (2, 343499960), (4, 171749980), (5, 137399984), (8, 85874990), (10, 68699992), (16, 42937495), (17, 40411760), (20, 34349996), (34, 20205880), (40, 17174998), (68, 10102940), (80, 8587499), (85, 8082352), (107, 6420560), (136, 5051470), (170, 4041176), (214, 3210280), (272, 2525735), (340, 2020588), (428, 1605140), (535, 1284112), (680, 1010294), (856, 802570), (1070, 642056), (1360, 505147), (1712, 401285), (1819, 377680), (2140, 321028), (3638, 188840), (4280, 160514), (4721, 145520), (7276, 94420), (8560, 80257), (9095, 75536), (9442, 72760), (14552, 47210), (18190, 37768), (18884, 36380), (23605, 29104)]