21528772

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{523}}^1$

素因数の和:819

約数の個数: 24

約数和(自身を含む): 38822112

約数和(自身を除く): 17293340

約数列:

[1, 2, 4, 41, 82, 164, 251, 502, 523, 1004, 1046, 2092, 10291, 20582, 21443, 41164, 42886, 85772, 131273, 262546, 525092, 5382193, 10764386, 21528772]

約数ペア:

[(1, 21528772), (2, 10764386), (4, 5382193), (41, 525092), (82, 262546), (164, 131273), (251, 85772), (502, 42886), (523, 41164), (1004, 21443), (1046, 20582), (2092, 10291)]