21418943

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4441}}^1$

素因数の和:4514

約数の個数: 16

約数和(自身を含む): 26865216

約数和(自身を除く): 5446273

約数列:

[1, 7, 13, 53, 91, 371, 689, 4441, 4823, 31087, 57733, 235373, 404131, 1647611, 3059849, 21418943]

約数ペア:

[(1, 21418943), (7, 3059849), (13, 1647611), (53, 404131), (91, 235373), (371, 57733), (689, 31087), (4441, 4823)]