20154008

素因数分解:

$2^3\times 7^1\times {\mathrm{487}}^1\times {\mathrm{739}}^1$

素因数の和:1239

約数の個数: 32

約数和(自身を含む): 43334400

約数和(自身を除く): 23180392

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 487, 739, 974, 1478, 1948, 2956, 3409, 3896, 5173, 5912, 6818, 10346, 13636, 20692, 27272, 41384, 359893, 719786, 1439572, 2519251, 2879144, 5038502, 10077004, 20154008]

約数ペア:

[(1, 20154008), (2, 10077004), (4, 5038502), (7, 2879144), (8, 2519251), (14, 1439572), (28, 719786), (56, 359893), (487, 41384), (739, 27272), (974, 20692), (1478, 13636), (1948, 10346), (2956, 6818), (3409, 5912), (3896, 5173)]