20391420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1033}}^1$

素因数の和:1099

約数の個数: 96

約数和(自身を含む): 66705408

約数和(自身を除く): 46313988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 420, 470, 564, 658, 705, 940, 987, 1033, 1316, 1410, 1645, 1974, 2066, 2820, 3099, 3290, 3948, 4132, 4935, 5165, 6198, 6580, 7231, 9870, 10330, 12396, 14462, 15495, 19740, 20660, 21693, 28924, 30990, 36155, 43386, 48551, 61980, 72310, 86772, 97102, 108465, 144620, 145653, 194204, 216930, 242755, 291306, 339857, 433860, 485510, 582612, 679714, 728265, 971020, 1019571, 1359428, 1456530, 1699285, 2039142, 2913060, 3398570, 4078284, 5097855, 6797140, 10195710, 20391420]

約数ペア:

[(1, 20391420), (2, 10195710), (3, 6797140), (4, 5097855), (5, 4078284), (6, 3398570), (7, 2913060), (10, 2039142), (12, 1699285), (14, 1456530), (15, 1359428), (20, 1019571), (21, 971020), (28, 728265), (30, 679714), (35, 582612), (42, 485510), (47, 433860), (60, 339857), (70, 291306), (84, 242755), (94, 216930), (105, 194204), (140, 145653), (141, 144620), (188, 108465), (210, 97102), (235, 86772), (282, 72310), (329, 61980), (420, 48551), (470, 43386), (564, 36155), (658, 30990), (705, 28924), (940, 21693), (987, 20660), (1033, 19740), (1316, 15495), (1410, 14462), (1645, 12396), (1974, 10330), (2066, 9870), (2820, 7231), (3099, 6580), (3290, 6198), (3948, 5165), (4132, 4935)]