20857455

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12527}}^1$

素因数の和:12575

約数の個数: 24

約数和(自身を含む): 37132992

約数和(自身を除く): 16275537

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12527, 37581, 62635, 112743, 187905, 463499, 563715, 1390497, 2317495, 4171491, 6952485, 20857455]

約数ペア:

[(1, 20857455), (3, 6952485), (5, 4171491), (9, 2317495), (15, 1390497), (37, 563715), (45, 463499), (111, 187905), (185, 112743), (333, 62635), (555, 37581), (1665, 12527)]