21398768

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{4219}}^1$

素因数の和:4544

約数の個数: 20

約数和(自身を含む): 41600760

約数和(自身を除く): 20201992

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 4219, 5072, 8438, 16876, 33752, 67504, 1337423, 2674846, 5349692, 10699384, 21398768]

約数ペア:

[(1, 21398768), (2, 10699384), (4, 5349692), (8, 2674846), (16, 1337423), (317, 67504), (634, 33752), (1268, 16876), (2536, 8438), (4219, 5072)]