21082019

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 24806400

約数和(自身を除く): 3724381

約数列:

[1, 7, 67, 79, 469, 553, 569, 3983, 5293, 37051, 38123, 44951, 266861, 314657, 3011717, 21082019]

約数ペア:

[(1, 21082019), (7, 3011717), (67, 314657), (79, 266861), (469, 44951), (553, 38123), (569, 37051), (3983, 5293)]