1890020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{71}}^1$

素因数の和:113

約数の個数: 48

約数和(自身を含む): 4427136

約数和(自身を除く): 2537116

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 220, 242, 284, 355, 484, 605, 710, 781, 1210, 1331, 1420, 1562, 2420, 2662, 3124, 3905, 5324, 6655, 7810, 8591, 13310, 15620, 17182, 26620, 34364, 42955, 85910, 94501, 171820, 189002, 378004, 472505, 945010, 1890020]

約数ペア:

[(1, 1890020), (2, 945010), (4, 472505), (5, 378004), (10, 189002), (11, 171820), (20, 94501), (22, 85910), (44, 42955), (55, 34364), (71, 26620), (110, 17182), (121, 15620), (142, 13310), (220, 8591), (242, 7810), (284, 6655), (355, 5324), (484, 3905), (605, 3124), (710, 2662), (781, 2420), (1210, 1562), (1331, 1420)]