20430880

素因数分解:

$2^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{857}}^1$

素因数の和:1021

約数の個数: 48

約数和(自身を含む): 48648600

約数和(自身を除く): 28217720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 149, 160, 298, 596, 745, 857, 1192, 1490, 1714, 2384, 2980, 3428, 4285, 4768, 5960, 6856, 8570, 11920, 13712, 17140, 23840, 27424, 34280, 68560, 127693, 137120, 255386, 510772, 638465, 1021544, 1276930, 2043088, 2553860, 4086176, 5107720, 10215440, 20430880]

約数ペア:

[(1, 20430880), (2, 10215440), (4, 5107720), (5, 4086176), (8, 2553860), (10, 2043088), (16, 1276930), (20, 1021544), (32, 638465), (40, 510772), (80, 255386), (149, 137120), (160, 127693), (298, 68560), (596, 34280), (745, 27424), (857, 23840), (1192, 17140), (1490, 13712), (1714, 11920), (2384, 8570), (2980, 6856), (3428, 5960), (4285, 4768)]