21231856

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{2357}}^1$

素因数の和:2928

約数の個数: 20

約数和(自身を含む): 41227272

約数和(自身を除く): 19995416

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 2357, 4504, 4714, 9008, 9428, 18856, 37712, 1326991, 2653982, 5307964, 10615928, 21231856]

約数ペア:

[(1, 21231856), (2, 10615928), (4, 5307964), (8, 2653982), (16, 1326991), (563, 37712), (1126, 18856), (2252, 9428), (2357, 9008), (4504, 4714)]