21866296

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 42029280

約数和(自身を除く): 20162984

約数列:

[1, 2, 4, 8, 71, 137, 142, 274, 281, 284, 548, 562, 568, 1096, 1124, 2248, 9727, 19454, 19951, 38497, 38908, 39902, 76994, 77816, 79804, 153988, 159608, 307976, 2733287, 5466574, 10933148, 21866296]

約数ペア:

[(1, 21866296), (2, 10933148), (4, 5466574), (8, 2733287), (71, 307976), (137, 159608), (142, 153988), (274, 79804), (281, 77816), (284, 76994), (548, 39902), (562, 38908), (568, 38497), (1096, 19951), (1124, 19454), (2248, 9727)]