21321970

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{18869}}^1$

素因数の和:18989

約数の個数: 16

約数和(自身を含む): 38721240

約数和(自身を除く): 17399270

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 18869, 37738, 94345, 188690, 2132197, 4264394, 10660985, 21321970]

約数ペア:

[(1, 21321970), (2, 10660985), (5, 4264394), (10, 2132197), (113, 188690), (226, 94345), (565, 37738), (1130, 18869)]