20542000

素因数分解:

$2^4\times 5^3\times {\mathrm{10271}}^1$

素因数の和:10294

約数の個数: 40

約数和(自身を含む): 49675392

約数和(自身を除く): 29133392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10271, 20542, 41084, 51355, 82168, 102710, 164336, 205420, 256775, 410840, 513550, 821680, 1027100, 1283875, 2054200, 2567750, 4108400, 5135500, 10271000, 20542000]

約数ペア:

[(1, 20542000), (2, 10271000), (4, 5135500), (5, 4108400), (8, 2567750), (10, 2054200), (16, 1283875), (20, 1027100), (25, 821680), (40, 513550), (50, 410840), (80, 256775), (100, 205420), (125, 164336), (200, 102710), (250, 82168), (400, 51355), (500, 41084), (1000, 20542), (2000, 10271)]