8007980

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{929}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 16873920

約数和(自身を除く): 8865940

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 929, 1724, 1858, 2155, 3716, 4310, 4645, 8620, 9290, 18580, 400399, 800798, 1601596, 2001995, 4003990, 8007980]

約数ペア:

[(1, 8007980), (2, 4003990), (4, 2001995), (5, 1601596), (10, 800798), (20, 400399), (431, 18580), (862, 9290), (929, 8620), (1724, 4645), (1858, 4310), (2155, 3716)]