21573616

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31357}}^1$

素因数の和:31408

約数の個数: 20

約数和(自身を含む): 42772312

約数和(自身を除く): 21198696

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31357, 62714, 125428, 250856, 501712, 1348351, 2696702, 5393404, 10786808, 21573616]

約数ペア:

[(1, 21573616), (2, 10786808), (4, 5393404), (8, 2696702), (16, 1348351), (43, 501712), (86, 250856), (172, 125428), (344, 62714), (688, 31357)]