21307845

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{967}}^1$

素因数の和:1101

約数の個数: 32

約数和(自身を含む): 37078272

約数和(自身を除く): 15770427

約数列:

[1, 3, 5, 13, 15, 39, 65, 113, 195, 339, 565, 967, 1469, 1695, 2901, 4407, 4835, 7345, 12571, 14505, 22035, 37713, 62855, 109271, 188565, 327813, 546355, 1420523, 1639065, 4261569, 7102615, 21307845]

約数ペア:

[(1, 21307845), (3, 7102615), (5, 4261569), (13, 1639065), (15, 1420523), (39, 546355), (65, 327813), (113, 188565), (195, 109271), (339, 62855), (565, 37713), (967, 22035), (1469, 14505), (1695, 12571), (2901, 7345), (4407, 4835)]