19516960

素因数分解:

$2^5\times 5^1\times {\mathrm{223}}^1\times {\mathrm{547}}^1$

素因数の和:785

約数の個数: 48

約数和(自身を含む): 46400256

約数和(自身を除く): 26883296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 223, 446, 547, 892, 1094, 1115, 1784, 2188, 2230, 2735, 3568, 4376, 4460, 5470, 7136, 8752, 8920, 10940, 17504, 17840, 21880, 35680, 43760, 87520, 121981, 243962, 487924, 609905, 975848, 1219810, 1951696, 2439620, 3903392, 4879240, 9758480, 19516960]

約数ペア:

[(1, 19516960), (2, 9758480), (4, 4879240), (5, 3903392), (8, 2439620), (10, 1951696), (16, 1219810), (20, 975848), (32, 609905), (40, 487924), (80, 243962), (160, 121981), (223, 87520), (446, 43760), (547, 35680), (892, 21880), (1094, 17840), (1115, 17504), (1784, 10940), (2188, 8920), (2230, 8752), (2735, 7136), (3568, 5470), (4376, 4460)]