221580801

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{145681}}^1$

素因数の和:145713

約数の個数: 18

約数和(自身を含む): 346577478

約数和(自身を除く): 124996677

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 145681, 437043, 1311129, 1893853, 5681559, 17044677, 24620089, 73860267, 221580801]

約数ペア:

[(1, 221580801), (3, 73860267), (9, 24620089), (13, 17044677), (39, 5681559), (117, 1893853), (169, 1311129), (507, 437043), (1521, 145681)]