18539690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8389}}^1$

素因数の和:8426

約数の個数: 32

約数和(自身を含む): 38057040

約数和(自身を除く): 19517350

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 8389, 16778, 41945, 83890, 109057, 142613, 218114, 285226, 545285, 713065, 1090570, 1426130, 1853969, 3707938, 9269845, 18539690]

約数ペア:

[(1, 18539690), (2, 9269845), (5, 3707938), (10, 1853969), (13, 1426130), (17, 1090570), (26, 713065), (34, 545285), (65, 285226), (85, 218114), (130, 142613), (170, 109057), (221, 83890), (442, 41945), (1105, 16778), (2210, 8389)]