20628840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1669}}^1$

素因数の和:1786

約数の個数: 64

約数和(自身を含む): 62524800

約数和(自身を除く): 41895960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 103, 120, 206, 309, 412, 515, 618, 824, 1030, 1236, 1545, 1669, 2060, 2472, 3090, 3338, 4120, 5007, 6180, 6676, 8345, 10014, 12360, 13352, 16690, 20028, 25035, 33380, 40056, 50070, 66760, 100140, 171907, 200280, 343814, 515721, 687628, 859535, 1031442, 1375256, 1719070, 2062884, 2578605, 3438140, 4125768, 5157210, 6876280, 10314420, 20628840]

約数ペア:

[(1, 20628840), (2, 10314420), (3, 6876280), (4, 5157210), (5, 4125768), (6, 3438140), (8, 2578605), (10, 2062884), (12, 1719070), (15, 1375256), (20, 1031442), (24, 859535), (30, 687628), (40, 515721), (60, 343814), (103, 200280), (120, 171907), (206, 100140), (309, 66760), (412, 50070), (515, 40056), (618, 33380), (824, 25035), (1030, 20028), (1236, 16690), (1545, 13352), (1669, 12360), (2060, 10014), (2472, 8345), (3090, 6676), (3338, 6180), (4120, 5007)]