1640886920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{24877}}^1$

素因数の和:25002

約数の個数: 64

約数和(自身を含む): 3949631280

約数和(自身を除く): 2308744360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 97, 136, 170, 194, 340, 388, 485, 680, 776, 970, 1649, 1940, 3298, 3880, 6596, 8245, 13192, 16490, 24877, 32980, 49754, 65960, 99508, 124385, 199016, 248770, 422909, 497540, 845818, 995080, 1691636, 2114545, 2413069, 3383272, 4229090, 4826138, 8458180, 9652276, 12065345, 16916360, 19304552, 24130690, 41022173, 48261380, 82044346, 96522760, 164088692, 205110865, 328177384, 410221730, 820443460, 1640886920]

約数ペア:

[(1, 1640886920), (2, 820443460), (4, 410221730), (5, 328177384), (8, 205110865), (10, 164088692), (17, 96522760), (20, 82044346), (34, 48261380), (40, 41022173), (68, 24130690), (85, 19304552), (97, 16916360), (136, 12065345), (170, 9652276), (194, 8458180), (340, 4826138), (388, 4229090), (485, 3383272), (680, 2413069), (776, 2114545), (970, 1691636), (1649, 995080), (1940, 845818), (3298, 497540), (3880, 422909), (6596, 248770), (8245, 199016), (13192, 124385), (16490, 99508), (24877, 65960), (32980, 49754)]