520013720

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{61613}}^1$

素因数の和:61835

約数の個数: 32

約数和(自身を含む): 1175595120

約数和(自身を除く): 655581400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 61613, 123226, 246452, 308065, 492904, 616130, 1232260, 2464520, 13000343, 26000686, 52001372, 65001715, 104002744, 130003430, 260006860, 520013720]

約数ペア:

[(1, 520013720), (2, 260006860), (4, 130003430), (5, 104002744), (8, 65001715), (10, 52001372), (20, 26000686), (40, 13000343), (211, 2464520), (422, 1232260), (844, 616130), (1055, 492904), (1688, 308065), (2110, 246452), (4220, 123226), (8440, 61613)]