18975760

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1229}}^1$

素因数の和:1435

約数の個数: 40

約数和(自身を含む): 44383320

約数和(自身を除く): 25407560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1229, 1544, 1930, 2458, 3088, 3860, 4916, 6145, 7720, 9832, 12290, 15440, 19664, 24580, 49160, 98320, 237197, 474394, 948788, 1185985, 1897576, 2371970, 3795152, 4743940, 9487880, 18975760]

約数ペア:

[(1, 18975760), (2, 9487880), (4, 4743940), (5, 3795152), (8, 2371970), (10, 1897576), (16, 1185985), (20, 948788), (40, 474394), (80, 237197), (193, 98320), (386, 49160), (772, 24580), (965, 19664), (1229, 15440), (1544, 12290), (1930, 9832), (2458, 7720), (3088, 6145), (3860, 4916)]