20880250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^4$

素因数の和:85

約数の個数: 40

約数和(自身を含む): 41530788

約数和(自身を除く): 20650538

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 289, 425, 578, 850, 1445, 2125, 2890, 4250, 4913, 7225, 9826, 14450, 24565, 36125, 49130, 72250, 83521, 122825, 167042, 245650, 417605, 614125, 835210, 1228250, 2088025, 4176050, 10440125, 20880250]

約数ペア:

[(1, 20880250), (2, 10440125), (5, 4176050), (10, 2088025), (17, 1228250), (25, 835210), (34, 614125), (50, 417605), (85, 245650), (125, 167042), (170, 122825), (250, 83521), (289, 72250), (425, 49130), (578, 36125), (850, 24565), (1445, 14450), (2125, 9826), (2890, 7225), (4250, 4913)]