20137840

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1193}}^1$

素因数の和:1417

約数の個数: 40

約数和(自身を含む): 47081808

約数和(自身を除く): 26943968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1193, 1688, 2110, 2386, 3376, 4220, 4772, 5965, 8440, 9544, 11930, 16880, 19088, 23860, 47720, 95440, 251723, 503446, 1006892, 1258615, 2013784, 2517230, 4027568, 5034460, 10068920, 20137840]

約数ペア:

[(1, 20137840), (2, 10068920), (4, 5034460), (5, 4027568), (8, 2517230), (10, 2013784), (16, 1258615), (20, 1006892), (40, 503446), (80, 251723), (211, 95440), (422, 47720), (844, 23860), (1055, 19088), (1193, 16880), (1688, 11930), (2110, 9544), (2386, 8440), (3376, 5965), (4220, 4772)]