20781650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1063}}^1$

素因数の和:1115

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 21965614

約数列:

[1, 2, 5, 10, 17, 23, 25, 34, 46, 50, 85, 115, 170, 230, 391, 425, 575, 782, 850, 1063, 1150, 1955, 2126, 3910, 5315, 9775, 10630, 18071, 19550, 24449, 26575, 36142, 48898, 53150, 90355, 122245, 180710, 244490, 415633, 451775, 611225, 831266, 903550, 1222450, 2078165, 4156330, 10390825, 20781650]

約数ペア:

[(1, 20781650), (2, 10390825), (5, 4156330), (10, 2078165), (17, 1222450), (23, 903550), (25, 831266), (34, 611225), (46, 451775), (50, 415633), (85, 244490), (115, 180710), (170, 122245), (230, 90355), (391, 53150), (425, 48898), (575, 36142), (782, 26575), (850, 24449), (1063, 19550), (1150, 18071), (1955, 10630), (2126, 9775), (3910, 5315)]