20498355

素因数分解:

$3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1171}}^1$

素因数の和:1571

約数の個数: 24

約数和(自身を含む): 35652240

約数和(自身を除く): 15153885

約数列:

[1, 3, 5, 9, 15, 45, 389, 1167, 1171, 1945, 3501, 3513, 5835, 5855, 10539, 17505, 17565, 52695, 455519, 1366557, 2277595, 4099671, 6832785, 20498355]

約数ペア:

[(1, 20498355), (3, 6832785), (5, 4099671), (9, 2277595), (15, 1366557), (45, 455519), (389, 52695), (1167, 17565), (1171, 17505), (1945, 10539), (3501, 5855), (3513, 5835)]