289403320

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{136511}}^1$

素因数の和:136575

約数の個数: 32

約数和(自身を含む): 663448320

約数和(自身を除く): 374045000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 136511, 273022, 546044, 682555, 1092088, 1365110, 2730220, 5460440, 7235083, 14470166, 28940332, 36175415, 57880664, 72350830, 144701660, 289403320]

約数ペア:

[(1, 289403320), (2, 144701660), (4, 72350830), (5, 57880664), (8, 36175415), (10, 28940332), (20, 14470166), (40, 7235083), (53, 5460440), (106, 2730220), (212, 1365110), (265, 1092088), (424, 682555), (530, 546044), (1060, 273022), (2120, 136511)]