157428621

素因数分解:

$3^2\times 7^2\times {\mathrm{356981}}^1$

素因数の和:357001

約数の個数: 18

約数和(自身を含む): 264523662

約数和(自身を除く): 107095041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 356981, 1070943, 2498867, 3212829, 7496601, 17492069, 22489803, 52476207, 157428621]

約数ペア:

[(1, 157428621), (3, 52476207), (7, 22489803), (9, 17492069), (21, 7496601), (49, 3212829), (63, 2498867), (147, 1070943), (441, 356981)]