18271240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{857}}^1$

素因数の和:922

約数の個数: 64

約数和(自身を含む): 45405360

約数和(自身を除く): 27134120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 857, 1066, 1640, 1714, 2132, 2665, 3428, 4264, 4285, 5330, 6856, 8570, 10660, 11141, 17140, 21320, 22282, 34280, 35137, 44564, 55705, 70274, 89128, 111410, 140548, 175685, 222820, 281096, 351370, 445640, 456781, 702740, 913562, 1405480, 1827124, 2283905, 3654248, 4567810, 9135620, 18271240]

約数ペア:

[(1, 18271240), (2, 9135620), (4, 4567810), (5, 3654248), (8, 2283905), (10, 1827124), (13, 1405480), (20, 913562), (26, 702740), (40, 456781), (41, 445640), (52, 351370), (65, 281096), (82, 222820), (104, 175685), (130, 140548), (164, 111410), (205, 89128), (260, 70274), (328, 55705), (410, 44564), (520, 35137), (533, 34280), (820, 22282), (857, 21320), (1066, 17140), (1640, 11141), (1714, 10660), (2132, 8570), (2665, 6856), (3428, 5330), (4264, 4285)]