20855175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1487}}^1$

素因数の和:1528

約数の個数: 48

約数和(自身を含む): 39854592

約数和(自身を除く): 18999417

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1487, 2805, 4461, 4675, 7435, 14025, 16357, 22305, 25279, 37175, 49071, 75837, 81785, 111525, 126395, 245355, 278069, 379185, 408925, 631975, 834207, 1226775, 1390345, 1895925, 4171035, 6951725, 20855175]

約数ペア:

[(1, 20855175), (3, 6951725), (5, 4171035), (11, 1895925), (15, 1390345), (17, 1226775), (25, 834207), (33, 631975), (51, 408925), (55, 379185), (75, 278069), (85, 245355), (165, 126395), (187, 111525), (255, 81785), (275, 75837), (425, 49071), (561, 37175), (825, 25279), (935, 22305), (1275, 16357), (1487, 14025), (2805, 7435), (4461, 4675)]