19001220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:330

約数の個数: 144

約数和(自身を含む): 64810368

約数和(自身を除く): 45809148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 49, 60, 69, 70, 84, 92, 98, 105, 115, 138, 140, 147, 161, 196, 210, 230, 245, 276, 281, 294, 322, 345, 420, 460, 483, 490, 562, 588, 644, 690, 735, 805, 843, 966, 980, 1124, 1127, 1380, 1405, 1470, 1610, 1686, 1932, 1967, 2254, 2415, 2810, 2940, 3220, 3372, 3381, 3934, 4215, 4508, 4830, 5620, 5635, 5901, 6463, 6762, 7868, 8430, 9660, 9835, 11270, 11802, 12926, 13524, 13769, 16860, 16905, 19389, 19670, 22540, 23604, 25852, 27538, 29505, 32315, 33810, 38778, 39340, 41307, 45241, 55076, 59010, 64630, 67620, 68845, 77556, 82614, 90482, 96945, 118020, 129260, 135723, 137690, 165228, 180964, 193890, 206535, 226205, 271446, 275380, 316687, 387780, 413070, 452410, 542892, 633374, 678615, 826140, 904820, 950061, 1266748, 1357230, 1583435, 1900122, 2714460, 3166870, 3800244, 4750305, 6333740, 9500610, 19001220]

約数ペア:

[(1, 19001220), (2, 9500610), (3, 6333740), (4, 4750305), (5, 3800244), (6, 3166870), (7, 2714460), (10, 1900122), (12, 1583435), (14, 1357230), (15, 1266748), (20, 950061), (21, 904820), (23, 826140), (28, 678615), (30, 633374), (35, 542892), (42, 452410), (46, 413070), (49, 387780), (60, 316687), (69, 275380), (70, 271446), (84, 226205), (92, 206535), (98, 193890), (105, 180964), (115, 165228), (138, 137690), (140, 135723), (147, 129260), (161, 118020), (196, 96945), (210, 90482), (230, 82614), (245, 77556), (276, 68845), (281, 67620), (294, 64630), (322, 59010), (345, 55076), (420, 45241), (460, 41307), (483, 39340), (490, 38778), (562, 33810), (588, 32315), (644, 29505), (690, 27538), (735, 25852), (805, 23604), (843, 22540), (966, 19670), (980, 19389), (1124, 16905), (1127, 16860), (1380, 13769), (1405, 13524), (1470, 12926), (1610, 11802), (1686, 11270), (1932, 9835), (1967, 9660), (2254, 8430), (2415, 7868), (2810, 6762), (2940, 6463), (3220, 5901), (3372, 5635), (3381, 5620), (3934, 4830), (4215, 4508)]