20147528

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18732472

約数列:

[1, 2, 4, 8, 71, 79, 142, 158, 284, 316, 449, 568, 632, 898, 1796, 3592, 5609, 11218, 22436, 31879, 35471, 44872, 63758, 70942, 127516, 141884, 255032, 283768, 2518441, 5036882, 10073764, 20147528]

約数ペア:

[(1, 20147528), (2, 10073764), (4, 5036882), (8, 2518441), (71, 283768), (79, 255032), (142, 141884), (158, 127516), (284, 70942), (316, 63758), (449, 44872), (568, 35471), (632, 31879), (898, 22436), (1796, 11218), (3592, 5609)]