18521720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2281}}^1$

素因数の和:2328

約数の個数: 64

約数和(自身を含む): 49291200

約数和(自身を除く): 30769480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2281, 4060, 4562, 8120, 9124, 11405, 15967, 18248, 22810, 31934, 45620, 63868, 66149, 79835, 91240, 127736, 132298, 159670, 264596, 319340, 330745, 463043, 529192, 638680, 661490, 926086, 1322980, 1852172, 2315215, 2645960, 3704344, 4630430, 9260860, 18521720]

約数ペア:

[(1, 18521720), (2, 9260860), (4, 4630430), (5, 3704344), (7, 2645960), (8, 2315215), (10, 1852172), (14, 1322980), (20, 926086), (28, 661490), (29, 638680), (35, 529192), (40, 463043), (56, 330745), (58, 319340), (70, 264596), (116, 159670), (140, 132298), (145, 127736), (203, 91240), (232, 79835), (280, 66149), (290, 63868), (406, 45620), (580, 31934), (812, 22810), (1015, 18248), (1160, 15967), (1624, 11405), (2030, 9124), (2281, 8120), (4060, 4562)]