19909424

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20399}}^1$

素因数の和:20468

約数の個数: 20

約数和(自身を含む): 39208800

約数和(自身を除く): 19299376

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20399, 40798, 81596, 163192, 326384, 1244339, 2488678, 4977356, 9954712, 19909424]

約数ペア:

[(1, 19909424), (2, 9954712), (4, 4977356), (8, 2488678), (16, 1244339), (61, 326384), (122, 163192), (244, 81596), (488, 40798), (976, 20399)]