18540872

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3989}}^1$

素因数の和:4085

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 21678328

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 3989, 4648, 7978, 15956, 27923, 31912, 55846, 111692, 223384, 331087, 662174, 1324348, 2317609, 2648696, 4635218, 9270436, 18540872]

約数ペア:

[(1, 18540872), (2, 9270436), (4, 4635218), (7, 2648696), (8, 2317609), (14, 1324348), (28, 662174), (56, 331087), (83, 223384), (166, 111692), (332, 55846), (581, 31912), (664, 27923), (1162, 15956), (2324, 7978), (3989, 4648)]