18420710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:581

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 23880730

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 47, 55, 70, 77, 94, 110, 154, 235, 329, 385, 470, 509, 517, 658, 770, 1018, 1034, 1645, 2545, 2585, 3290, 3563, 3619, 5090, 5170, 5599, 7126, 7238, 11198, 17815, 18095, 23923, 27995, 35630, 36190, 39193, 47846, 55990, 78386, 119615, 167461, 195965, 239230, 263153, 334922, 391930, 526306, 837305, 1315765, 1674610, 1842071, 2631530, 3684142, 9210355, 18420710]

約数ペア:

[(1, 18420710), (2, 9210355), (5, 3684142), (7, 2631530), (10, 1842071), (11, 1674610), (14, 1315765), (22, 837305), (35, 526306), (47, 391930), (55, 334922), (70, 263153), (77, 239230), (94, 195965), (110, 167461), (154, 119615), (235, 78386), (329, 55990), (385, 47846), (470, 39193), (509, 36190), (517, 35630), (658, 27995), (770, 23923), (1018, 18095), (1034, 17815), (1645, 11198), (2545, 7238), (2585, 7126), (3290, 5599), (3563, 5170), (3619, 5090)]