281262020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1081777}}^1$

素因数の和:1081799

約数の個数: 24

約数和(自身を含む): 636085464

約数和(自身を除く): 354823444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1081777, 2163554, 4327108, 5408885, 10817770, 14063101, 21635540, 28126202, 56252404, 70315505, 140631010, 281262020]

約数ペア:

[(1, 281262020), (2, 140631010), (4, 70315505), (5, 56252404), (10, 28126202), (13, 21635540), (20, 14063101), (26, 10817770), (52, 5408885), (65, 4327108), (130, 2163554), (260, 1081777)]