31888520

素因数分解:

$2^3\times 5^1\times {\mathrm{811}}^1\times {\mathrm{983}}^1$

素因数の和:1805

約数の個数: 32

約数和(自身を含む): 71910720

約数和(自身を除く): 40022200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 811, 983, 1622, 1966, 3244, 3932, 4055, 4915, 6488, 7864, 8110, 9830, 16220, 19660, 32440, 39320, 797213, 1594426, 3188852, 3986065, 6377704, 7972130, 15944260, 31888520]

約数ペア:

[(1, 31888520), (2, 15944260), (4, 7972130), (5, 6377704), (8, 3986065), (10, 3188852), (20, 1594426), (40, 797213), (811, 39320), (983, 32440), (1622, 19660), (1966, 16220), (3244, 9830), (3932, 8110), (4055, 7864), (4915, 6488)]