21285523

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:778

約数の個数: 16

約数和(自身を含む): 25077760

約数和(自身を除く): 3792237

約数列:

[1, 7, 61, 79, 427, 553, 631, 4417, 4819, 33733, 38491, 49849, 269437, 348943, 3040789, 21285523]

約数ペア:

[(1, 21285523), (7, 3040789), (61, 348943), (79, 269437), (427, 49849), (553, 38491), (631, 33733), (4417, 4819)]