18724565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 25090560

約数和(自身を除く): 6365995

約数列:

[1, 5, 17, 43, 47, 85, 109, 215, 235, 545, 731, 799, 1853, 2021, 3655, 3995, 4687, 5123, 9265, 10105, 23435, 25615, 34357, 79679, 87091, 171785, 220289, 398395, 435455, 1101445, 3744913, 18724565]

約数ペア:

[(1, 18724565), (5, 3744913), (17, 1101445), (43, 435455), (47, 398395), (85, 220289), (109, 171785), (215, 87091), (235, 79679), (545, 34357), (731, 25615), (799, 23435), (1853, 10105), (2021, 9265), (3655, 5123), (3995, 4687)]