16640680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{577}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 43280640

約数和(自身を除く): 26639960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 577, 721, 824, 1030, 1154, 1442, 2060, 2308, 2884, 2885, 3605, 4039, 4120, 4616, 5768, 5770, 7210, 8078, 11540, 14420, 16156, 20195, 23080, 28840, 32312, 40390, 59431, 80780, 118862, 161560, 237724, 297155, 416017, 475448, 594310, 832034, 1188620, 1664068, 2080085, 2377240, 3328136, 4160170, 8320340, 16640680]

約数ペア:

[(1, 16640680), (2, 8320340), (4, 4160170), (5, 3328136), (7, 2377240), (8, 2080085), (10, 1664068), (14, 1188620), (20, 832034), (28, 594310), (35, 475448), (40, 416017), (56, 297155), (70, 237724), (103, 161560), (140, 118862), (206, 80780), (280, 59431), (412, 40390), (515, 32312), (577, 28840), (721, 23080), (824, 20195), (1030, 16156), (1154, 14420), (1442, 11540), (2060, 8078), (2308, 7210), (2884, 5770), (2885, 5768), (3605, 4616), (4039, 4120)]