28173640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{5821}}^1$

素因数の和:5854

約数の個数: 48

約数和(自身を含む): 69689340

約数和(自身を除く): 41515700

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 5821, 11642, 23284, 29105, 46568, 58210, 64031, 116420, 128062, 232840, 256124, 320155, 512248, 640310, 704341, 1280620, 1408682, 2561240, 2817364, 3521705, 5634728, 7043410, 14086820, 28173640]

約数ペア:

[(1, 28173640), (2, 14086820), (4, 7043410), (5, 5634728), (8, 3521705), (10, 2817364), (11, 2561240), (20, 1408682), (22, 1280620), (40, 704341), (44, 640310), (55, 512248), (88, 320155), (110, 256124), (121, 232840), (220, 128062), (242, 116420), (440, 64031), (484, 58210), (605, 46568), (968, 29105), (1210, 23284), (2420, 11642), (4840, 5821)]