21013252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{4001}}^1$

素因数の和:4119

約数の個数: 24

約数和(自身を含む): 40003992

約数和(自身を除く): 18990740

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 4001, 5252, 8002, 16004, 52013, 104026, 208052, 404101, 808202, 1616404, 5253313, 10506626, 21013252]

約数ペア:

[(1, 21013252), (2, 10506626), (4, 5253313), (13, 1616404), (26, 808202), (52, 404101), (101, 208052), (202, 104026), (404, 52013), (1313, 16004), (2626, 8002), (4001, 5252)]