646650290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{19661}}^1$

素因数の和:19715

約数の個数: 64

約数和(自身を含む): 1426989312

約数和(自身を除く): 780339022

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 26, 46, 55, 65, 110, 115, 130, 143, 230, 253, 286, 299, 506, 598, 715, 1265, 1430, 1495, 2530, 2990, 3289, 6578, 16445, 19661, 32890, 39322, 98305, 196610, 216271, 255593, 432542, 452203, 511186, 904406, 1081355, 1277965, 2162710, 2261015, 2555930, 2811523, 4522030, 4974233, 5623046, 5878639, 9948466, 11757278, 14057615, 24871165, 28115230, 29393195, 49742330, 58786390, 64665029, 129330058, 323325145, 646650290]

約数ペア:

[(1, 646650290), (2, 323325145), (5, 129330058), (10, 64665029), (11, 58786390), (13, 49742330), (22, 29393195), (23, 28115230), (26, 24871165), (46, 14057615), (55, 11757278), (65, 9948466), (110, 5878639), (115, 5623046), (130, 4974233), (143, 4522030), (230, 2811523), (253, 2555930), (286, 2261015), (299, 2162710), (506, 1277965), (598, 1081355), (715, 904406), (1265, 511186), (1430, 452203), (1495, 432542), (2530, 255593), (2990, 216271), (3289, 196610), (6578, 98305), (16445, 39322), (19661, 32890)]