1221000221

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{37423}}^1$

素因数の和:37568

約数の個数: 16

約数和(自身を含む): 1437081600

約数和(自身を除く): 216081379

約数列:

[1, 7, 59, 79, 413, 553, 4661, 32627, 37423, 261961, 2207957, 2956417, 15455699, 20694919, 174428603, 1221000221]

約数ペア:

[(1, 1221000221), (7, 174428603), (59, 20694919), (79, 15455699), (413, 2956417), (553, 2207957), (4661, 261961), (32627, 37423)]