21723260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{6427}}^1$

素因数の和:6462

約数の個数: 36

約数和(自身を含む): 49405608

約数和(自身を除く): 27682348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 6427, 12854, 25708, 32135, 64270, 83551, 128540, 167102, 334204, 417755, 835510, 1086163, 1671020, 2172326, 4344652, 5430815, 10861630, 21723260]

約数ペア:

[(1, 21723260), (2, 10861630), (4, 5430815), (5, 4344652), (10, 2172326), (13, 1671020), (20, 1086163), (26, 835510), (52, 417755), (65, 334204), (130, 167102), (169, 128540), (260, 83551), (338, 64270), (676, 32135), (845, 25708), (1690, 12854), (3380, 6427)]