21206650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 48

約数和(自身を含む): 42553080

約数和(自身を除く): 21346430

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 61, 85, 122, 170, 305, 409, 425, 610, 818, 850, 1037, 1525, 2045, 2074, 3050, 4090, 5185, 6953, 10225, 10370, 13906, 20450, 24949, 25925, 34765, 49898, 51850, 69530, 124745, 173825, 249490, 347650, 424133, 623725, 848266, 1247450, 2120665, 4241330, 10603325, 21206650]

約数ペア:

[(1, 21206650), (2, 10603325), (5, 4241330), (10, 2120665), (17, 1247450), (25, 848266), (34, 623725), (50, 424133), (61, 347650), (85, 249490), (122, 173825), (170, 124745), (305, 69530), (409, 51850), (425, 49898), (610, 34765), (818, 25925), (850, 24949), (1037, 20450), (1525, 13906), (2045, 10370), (2074, 10225), (3050, 6953), (4090, 5185)]