21873220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64333}}^1$

素因数の和:64359

約数の個数: 24

約数和(自身を含む): 48636504

約数和(自身を除く): 26763284

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64333, 128666, 257332, 321665, 643330, 1093661, 1286660, 2187322, 4374644, 5468305, 10936610, 21873220]

約数ペア:

[(1, 21873220), (2, 10936610), (4, 5468305), (5, 4374644), (10, 2187322), (17, 1286660), (20, 1093661), (34, 643330), (68, 321665), (85, 257332), (170, 128666), (340, 64333)]