20459925

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1783}}^1$

素因数の和:1819

約数の個数: 48

約数和(自身を含む): 39818880

約数和(自身を除く): 19358955

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 1783, 2295, 3825, 5349, 8915, 11475, 16047, 26745, 30311, 44575, 48141, 80235, 90933, 133725, 151555, 240705, 272799, 401175, 454665, 757775, 818397, 1203525, 1363995, 2273325, 4091985, 6819975, 20459925]

約数ペア:

[(1, 20459925), (3, 6819975), (5, 4091985), (9, 2273325), (15, 1363995), (17, 1203525), (25, 818397), (27, 757775), (45, 454665), (51, 401175), (75, 272799), (85, 240705), (135, 151555), (153, 133725), (225, 90933), (255, 80235), (425, 48141), (459, 44575), (675, 30311), (765, 26745), (1275, 16047), (1783, 11475), (2295, 8915), (3825, 5349)]