80870840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1097}}^1$

素因数の和:1224

約数の個数: 64

約数和(自身を含む): 193687200

約数和(自身を除く): 112816360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 380, 388, 485, 760, 776, 970, 1097, 1843, 1940, 2194, 3686, 3880, 4388, 5485, 7372, 8776, 9215, 10970, 14744, 18430, 20843, 21940, 36860, 41686, 43880, 73720, 83372, 104215, 106409, 166744, 208430, 212818, 416860, 425636, 532045, 833720, 851272, 1064090, 2021771, 2128180, 4043542, 4256360, 8087084, 10108855, 16174168, 20217710, 40435420, 80870840]

約数ペア:

[(1, 80870840), (2, 40435420), (4, 20217710), (5, 16174168), (8, 10108855), (10, 8087084), (19, 4256360), (20, 4043542), (38, 2128180), (40, 2021771), (76, 1064090), (95, 851272), (97, 833720), (152, 532045), (190, 425636), (194, 416860), (380, 212818), (388, 208430), (485, 166744), (760, 106409), (776, 104215), (970, 83372), (1097, 73720), (1843, 43880), (1940, 41686), (2194, 36860), (3686, 21940), (3880, 20843), (4388, 18430), (5485, 14744), (7372, 10970), (8776, 9215)]