18900860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1621}}^1$

素因数の和:1694

約数の個数: 48

約数和(自身を含む): 44144352

約数和(自身を除く): 25243492

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1621, 2332, 2915, 3242, 5830, 6484, 8105, 11660, 16210, 17831, 32420, 35662, 71324, 85913, 89155, 171826, 178310, 343652, 356620, 429565, 859130, 945043, 1718260, 1890086, 3780172, 4725215, 9450430, 18900860]

約数ペア:

[(1, 18900860), (2, 9450430), (4, 4725215), (5, 3780172), (10, 1890086), (11, 1718260), (20, 945043), (22, 859130), (44, 429565), (53, 356620), (55, 343652), (106, 178310), (110, 171826), (212, 89155), (220, 85913), (265, 71324), (530, 35662), (583, 32420), (1060, 17831), (1166, 16210), (1621, 11660), (2332, 8105), (2915, 6484), (3242, 5830)]