19566020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23108668

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 107, 164, 205, 214, 223, 410, 428, 446, 535, 820, 892, 1070, 1115, 2140, 2230, 4387, 4460, 8774, 9143, 17548, 18286, 21935, 23861, 36572, 43870, 45715, 47722, 87740, 91430, 95444, 119305, 182860, 238610, 477220, 978301, 1956602, 3913204, 4891505, 9783010, 19566020]

約数ペア:

[(1, 19566020), (2, 9783010), (4, 4891505), (5, 3913204), (10, 1956602), (20, 978301), (41, 477220), (82, 238610), (107, 182860), (164, 119305), (205, 95444), (214, 91430), (223, 87740), (410, 47722), (428, 45715), (446, 43870), (535, 36572), (820, 23861), (892, 21935), (1070, 18286), (1115, 17548), (2140, 9143), (2230, 8774), (4387, 4460)]