64917680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{42709}}^1$

素因数の和:42741

約数の個数: 40

約数和(自身を含む): 158881200

約数和(自身を除く): 93963520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 42709, 85418, 170836, 213545, 341672, 427090, 683344, 811471, 854180, 1622942, 1708360, 3245884, 3416720, 4057355, 6491768, 8114710, 12983536, 16229420, 32458840, 64917680]

約数ペア:

[(1, 64917680), (2, 32458840), (4, 16229420), (5, 12983536), (8, 8114710), (10, 6491768), (16, 4057355), (19, 3416720), (20, 3245884), (38, 1708360), (40, 1622942), (76, 854180), (80, 811471), (95, 683344), (152, 427090), (190, 341672), (304, 213545), (380, 170836), (760, 85418), (1520, 42709)]