18507945

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 30942720

約数和(自身を除く): 12434775

約数列:

[1, 3, 5, 15, 29, 87, 145, 157, 271, 435, 471, 785, 813, 1355, 2355, 4065, 4553, 7859, 13659, 22765, 23577, 39295, 42547, 68295, 117885, 127641, 212735, 638205, 1233863, 3701589, 6169315, 18507945]

約数ペア:

[(1, 18507945), (3, 6169315), (5, 3701589), (15, 1233863), (29, 638205), (87, 212735), (145, 127641), (157, 117885), (271, 68295), (435, 42547), (471, 39295), (785, 23577), (813, 22765), (1355, 13659), (2355, 7859), (4065, 4553)]