21382360

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7529}}^1$

素因数の和:7611

約数の個数: 32

約数和(自身を含む): 48794400

約数和(自身を除く): 27412040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7529, 15058, 30116, 37645, 60232, 75290, 150580, 301160, 534559, 1069118, 2138236, 2672795, 4276472, 5345590, 10691180, 21382360]

約数ペア:

[(1, 21382360), (2, 10691180), (4, 5345590), (5, 4276472), (8, 2672795), (10, 2138236), (20, 1069118), (40, 534559), (71, 301160), (142, 150580), (284, 75290), (355, 60232), (568, 37645), (710, 30116), (1420, 15058), (2840, 7529)]