20842700

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{811}}^1$

素因数の和:1082

約数の個数: 36

約数和(自身を含む): 45460632

約数和(自身を除く): 24617932

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 514, 811, 1028, 1285, 1622, 2570, 3244, 4055, 5140, 6425, 8110, 12850, 16220, 20275, 25700, 40550, 81100, 208427, 416854, 833708, 1042135, 2084270, 4168540, 5210675, 10421350, 20842700]

約数ペア:

[(1, 20842700), (2, 10421350), (4, 5210675), (5, 4168540), (10, 2084270), (20, 1042135), (25, 833708), (50, 416854), (100, 208427), (257, 81100), (514, 40550), (811, 25700), (1028, 20275), (1285, 16220), (1622, 12850), (2570, 8110), (3244, 6425), (4055, 5140)]