21389494

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{367}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 38578176

約数和(自身を除く): 17188682

約数列:

[1, 2, 7, 14, 23, 46, 161, 181, 322, 362, 367, 734, 1267, 2534, 2569, 4163, 5138, 8326, 8441, 16882, 29141, 58282, 59087, 66427, 118174, 132854, 464989, 929978, 1527821, 3055642, 10694747, 21389494]

約数ペア:

[(1, 21389494), (2, 10694747), (7, 3055642), (14, 1527821), (23, 929978), (46, 464989), (161, 132854), (181, 118174), (322, 66427), (362, 59087), (367, 58282), (734, 29141), (1267, 16882), (2534, 8441), (2569, 8326), (4163, 5138)]