12789940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9007}}^1$

素因数の和:9087

約数の個数: 24

約数和(自身を含む): 27240192

約数和(自身を除く): 14450252

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 9007, 18014, 36028, 45035, 90070, 180140, 639497, 1278994, 2557988, 3197485, 6394970, 12789940]

約数ペア:

[(1, 12789940), (2, 6394970), (4, 3197485), (5, 2557988), (10, 1278994), (20, 639497), (71, 180140), (142, 90070), (284, 45035), (355, 36028), (710, 18014), (1420, 9007)]