20373925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 30623040

約数和(自身を除く): 10249115

約数列:

[1, 5, 11, 13, 25, 41, 55, 65, 139, 143, 205, 275, 325, 451, 533, 695, 715, 1025, 1529, 1807, 2255, 2665, 3475, 3575, 5699, 5863, 7645, 9035, 11275, 13325, 19877, 28495, 29315, 38225, 45175, 62689, 74087, 99385, 142475, 146575, 313445, 370435, 496925, 814957, 1567225, 1852175, 4074785, 20373925]

約数ペア:

[(1, 20373925), (5, 4074785), (11, 1852175), (13, 1567225), (25, 814957), (41, 496925), (55, 370435), (65, 313445), (139, 146575), (143, 142475), (205, 99385), (275, 74087), (325, 62689), (451, 45175), (533, 38225), (695, 29315), (715, 28495), (1025, 19877), (1529, 13325), (1807, 11275), (2255, 9035), (2665, 7645), (3475, 5863), (3575, 5699)]