28290020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128591}}^1$

素因数の和:128611

約数の個数: 24

約数和(自身を含む): 64810368

約数和(自身を除く): 36520348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128591, 257182, 514364, 642955, 1285910, 1414501, 2571820, 2829002, 5658004, 7072505, 14145010, 28290020]

約数ペア:

[(1, 28290020), (2, 14145010), (4, 7072505), (5, 5658004), (10, 2829002), (11, 2571820), (20, 1414501), (22, 1285910), (44, 642955), (55, 514364), (110, 257182), (220, 128591)]