12781120

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3631}}^1$

素因数の和:3659

約数の個数: 56

約数和(自身を含む): 33211008

約数和(自身を除く): 20429888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 3631, 7262, 14524, 18155, 29048, 36310, 39941, 58096, 72620, 79882, 116192, 145240, 159764, 199705, 232384, 290480, 319528, 399410, 580960, 639056, 798820, 1161920, 1278112, 1597640, 2556224, 3195280, 6390560, 12781120]

約数ペア:

[(1, 12781120), (2, 6390560), (4, 3195280), (5, 2556224), (8, 1597640), (10, 1278112), (11, 1161920), (16, 798820), (20, 639056), (22, 580960), (32, 399410), (40, 319528), (44, 290480), (55, 232384), (64, 199705), (80, 159764), (88, 145240), (110, 116192), (160, 79882), (176, 72620), (220, 58096), (320, 39941), (352, 36310), (440, 29048), (704, 18155), (880, 14524), (1760, 7262), (3520, 3631)]