20577788

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1$

素因数の和:1034

約数の個数: 48

約数和(自身を含む): 45577728

約数和(自身を除く): 24999940

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 941, 994, 1562, 1882, 1988, 3124, 3764, 5467, 6587, 10351, 10934, 13174, 20702, 21868, 26348, 41404, 66811, 72457, 133622, 144914, 267244, 289828, 467677, 734921, 935354, 1469842, 1870708, 2939684, 5144447, 10288894, 20577788]

約数ペア:

[(1, 20577788), (2, 10288894), (4, 5144447), (7, 2939684), (11, 1870708), (14, 1469842), (22, 935354), (28, 734921), (44, 467677), (71, 289828), (77, 267244), (142, 144914), (154, 133622), (284, 72457), (308, 66811), (497, 41404), (781, 26348), (941, 21868), (994, 20702), (1562, 13174), (1882, 10934), (1988, 10351), (3124, 6587), (3764, 5467)]