21154549

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 23990400

約数和(自身を除く): 2835851

約数列:

[1, 13, 23, 139, 299, 509, 1807, 3197, 6617, 11707, 41561, 70751, 152191, 919763, 1627273, 21154549]

約数ペア:

[(1, 21154549), (13, 1627273), (23, 919763), (139, 152191), (299, 70751), (509, 41561), (1807, 11707), (3197, 6617)]