21997712

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{124987}}^1$

素因数の和:125006

約数の個数: 20

約数和(自身を含む): 46495536

約数和(自身を除く): 24497824

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 124987, 249974, 499948, 999896, 1374857, 1999792, 2749714, 5499428, 10998856, 21997712]

約数ペア:

[(1, 21997712), (2, 10998856), (4, 5499428), (8, 2749714), (11, 1999792), (16, 1374857), (22, 999896), (44, 499948), (88, 249974), (176, 124987)]