20947650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{359}}^1\times {\mathrm{389}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 52228800

約数和(自身を除く): 31281150

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 359, 389, 718, 778, 1077, 1167, 1795, 1945, 2154, 2334, 3590, 3890, 5385, 5835, 8975, 9725, 10770, 11670, 17950, 19450, 26925, 29175, 53850, 58350, 139651, 279302, 418953, 698255, 837906, 1396510, 2094765, 3491275, 4189530, 6982550, 10473825, 20947650]

約数ペア:

[(1, 20947650), (2, 10473825), (3, 6982550), (5, 4189530), (6, 3491275), (10, 2094765), (15, 1396510), (25, 837906), (30, 698255), (50, 418953), (75, 279302), (150, 139651), (359, 58350), (389, 53850), (718, 29175), (778, 26925), (1077, 19450), (1167, 17950), (1795, 11670), (1945, 10770), (2154, 9725), (2334, 8975), (3590, 5835), (3890, 5385)]