20983240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18089}}^1$

素因数の和:18129

約数の個数: 32

約数和(自身を含む): 48843000

約数和(自身を除く): 27859760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18089, 36178, 72356, 90445, 144712, 180890, 361780, 524581, 723560, 1049162, 2098324, 2622905, 4196648, 5245810, 10491620, 20983240]

約数ペア:

[(1, 20983240), (2, 10491620), (4, 5245810), (5, 4196648), (8, 2622905), (10, 2098324), (20, 1049162), (29, 723560), (40, 524581), (58, 361780), (116, 180890), (145, 144712), (232, 90445), (290, 72356), (580, 36178), (1160, 18089)]