21497581

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:480

約数の個数: 16

約数和(自身を含む): 25127424

約数和(自身を除く): 3629843

約数列:

[1, 7, 83, 163, 227, 581, 1141, 1589, 13529, 18841, 37001, 94703, 131887, 259007, 3071083, 21497581]

約数ペア:

[(1, 21497581), (7, 3071083), (83, 259007), (163, 131887), (227, 94703), (581, 37001), (1141, 18841), (1589, 13529)]