19997270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1489}}^1$

素因数の和:1592

約数の個数: 32

約数和(自身を含む): 38620800

約数和(自身を除く): 18623530

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1489, 2686, 2978, 6715, 7445, 13430, 14890, 25313, 50626, 117631, 126565, 235262, 253130, 588155, 1176310, 1999727, 3999454, 9998635, 19997270]

約数ペア:

[(1, 19997270), (2, 9998635), (5, 3999454), (10, 1999727), (17, 1176310), (34, 588155), (79, 253130), (85, 235262), (158, 126565), (170, 117631), (395, 50626), (790, 25313), (1343, 14890), (1489, 13430), (2686, 7445), (2978, 6715)]