21017116

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2111}}^1$

素因数の和:2265

約数の個数: 24

約数和(自身を含む): 39029760

約数和(自身を除く): 18012644

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 2111, 2489, 4222, 4978, 8444, 9956, 40109, 80218, 160436, 276541, 553082, 1106164, 5254279, 10508558, 21017116]

約数ペア:

[(1, 21017116), (2, 10508558), (4, 5254279), (19, 1106164), (38, 553082), (76, 276541), (131, 160436), (262, 80218), (524, 40109), (2111, 9956), (2489, 8444), (4222, 4978)]