21277257

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{2861}}^1$

素因数の和:2968

約数の個数: 16

約数和(自身を含む): 29581632

約数和(自身を除く): 8304375

約数列:

[1, 3, 37, 67, 111, 201, 2479, 2861, 7437, 8583, 105857, 191687, 317571, 575061, 7092419, 21277257]

約数ペア:

[(1, 21277257), (3, 7092419), (37, 575061), (67, 317571), (111, 191687), (201, 105857), (2479, 8583), (2861, 7437)]