78081740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{1381}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 179704224

約数和(自身を除く): 101622484

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 514, 1028, 1285, 1381, 2570, 2762, 2827, 5140, 5524, 5654, 6905, 11308, 13810, 14135, 15191, 27620, 28270, 30382, 56540, 60764, 75955, 151910, 303820, 354917, 709834, 1419668, 1774585, 3549170, 3904087, 7098340, 7808174, 15616348, 19520435, 39040870, 78081740]

約数ペア:

[(1, 78081740), (2, 39040870), (4, 19520435), (5, 15616348), (10, 7808174), (11, 7098340), (20, 3904087), (22, 3549170), (44, 1774585), (55, 1419668), (110, 709834), (220, 354917), (257, 303820), (514, 151910), (1028, 75955), (1285, 60764), (1381, 56540), (2570, 30382), (2762, 28270), (2827, 27620), (5140, 15191), (5524, 14135), (5654, 13810), (6905, 11308)]