209320040

素因数分解:

$2^3\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{3331}}^1$

素因数の和:4913

約数の個数: 32

約数和(自身を含む): 471411360

約数和(自身を除く): 262091320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1571, 3142, 3331, 6284, 6662, 7855, 12568, 13324, 15710, 16655, 26648, 31420, 33310, 62840, 66620, 133240, 5233001, 10466002, 20932004, 26165005, 41864008, 52330010, 104660020, 209320040]

約数ペア:

[(1, 209320040), (2, 104660020), (4, 52330010), (5, 41864008), (8, 26165005), (10, 20932004), (20, 10466002), (40, 5233001), (1571, 133240), (3142, 66620), (3331, 62840), (6284, 33310), (6662, 31420), (7855, 26648), (12568, 16655), (13324, 15710)]