18401205

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{607}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 30818304

約数和(自身を除く): 12417099

約数列:

[1, 3, 5, 15, 43, 47, 129, 141, 215, 235, 607, 645, 705, 1821, 2021, 3035, 6063, 9105, 10105, 26101, 28529, 30315, 78303, 85587, 130505, 142645, 391515, 427935, 1226747, 3680241, 6133735, 18401205]

約数ペア:

[(1, 18401205), (3, 6133735), (5, 3680241), (15, 1226747), (43, 427935), (47, 391515), (129, 142645), (141, 130505), (215, 85587), (235, 78303), (607, 30315), (645, 28529), (705, 26101), (1821, 10105), (2021, 9105), (3035, 6063)]