18729735

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 31629312

約数和(自身を除く): 12899577

約数列:

[1, 3, 5, 15, 31, 47, 93, 141, 155, 235, 465, 705, 857, 1457, 2571, 4285, 4371, 7285, 12855, 21855, 26567, 40279, 79701, 120837, 132835, 201395, 398505, 604185, 1248649, 3745947, 6243245, 18729735]

約数ペア:

[(1, 18729735), (3, 6243245), (5, 3745947), (15, 1248649), (31, 604185), (47, 398505), (93, 201395), (141, 132835), (155, 120837), (235, 79701), (465, 40279), (705, 26567), (857, 21855), (1457, 12855), (2571, 7285), (4285, 4371)]