21089691

素因数分解:

$3^2\times 7^1\times {\mathrm{557}}^1\times {\mathrm{601}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 34935264

約数和(自身を除く): 13845573

約数列:

[1, 3, 7, 9, 21, 63, 557, 601, 1671, 1803, 3899, 4207, 5013, 5409, 11697, 12621, 35091, 37863, 334757, 1004271, 2343299, 3012813, 7029897, 21089691]

約数ペア:

[(1, 21089691), (3, 7029897), (7, 3012813), (9, 2343299), (21, 1004271), (63, 334757), (557, 37863), (601, 35091), (1671, 12621), (1803, 11697), (3899, 5409), (4207, 5013)]