90999909

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 144

約数和(自身を含む): 190261440

約数和(自身を除く): 99261531

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 37, 39, 49, 63, 77, 91, 99, 111, 117, 143, 147, 169, 189, 231, 259, 273, 297, 333, 351, 407, 429, 441, 481, 507, 539, 637, 693, 777, 819, 999, 1001, 1183, 1221, 1287, 1323, 1443, 1521, 1617, 1813, 1859, 1911, 2079, 2331, 2457, 2849, 3003, 3367, 3549, 3663, 3861, 4329, 4563, 4851, 5291, 5439, 5577, 5733, 6253, 6993, 7007, 8281, 8547, 9009, 10101, 10647, 10989, 12987, 13013, 14553, 15873, 16317, 16731, 17199, 18759, 19943, 21021, 23569, 24843, 25641, 27027, 30303, 31941, 37037, 39039, 43771, 47619, 48951, 50193, 56277, 59829, 63063, 68783, 70707, 74529, 76923, 90909, 91091, 111111, 117117, 131313, 142857, 168831, 179487, 189189, 206349, 212121, 223587, 259259, 273273, 306397, 333333, 351351, 393939, 481481, 538461, 619047, 636363, 777777, 819819, 919191, 999999, 1181817, 1444443, 1857141, 2333331, 2459457, 2757573, 3370367, 4333329, 6999993, 8272719, 10111101, 12999987, 30333303, 90999909]

約数ペア:

[(1, 90999909), (3, 30333303), (7, 12999987), (9, 10111101), (11, 8272719), (13, 6999993), (21, 4333329), (27, 3370367), (33, 2757573), (37, 2459457), (39, 2333331), (49, 1857141), (63, 1444443), (77, 1181817), (91, 999999), (99, 919191), (111, 819819), (117, 777777), (143, 636363), (147, 619047), (169, 538461), (189, 481481), (231, 393939), (259, 351351), (273, 333333), (297, 306397), (333, 273273), (351, 259259), (407, 223587), (429, 212121), (441, 206349), (481, 189189), (507, 179487), (539, 168831), (637, 142857), (693, 131313), (777, 117117), (819, 111111), (999, 91091), (1001, 90909), (1183, 76923), (1221, 74529), (1287, 70707), (1323, 68783), (1443, 63063), (1521, 59829), (1617, 56277), (1813, 50193), (1859, 48951), (1911, 47619), (2079, 43771), (2331, 39039), (2457, 37037), (2849, 31941), (3003, 30303), (3367, 27027), (3549, 25641), (3663, 24843), (3861, 23569), (4329, 21021), (4563, 19943), (4851, 18759), (5291, 17199), (5439, 16731), (5577, 16317), (5733, 15873), (6253, 14553), (6993, 13013), (7007, 12987), (8281, 10989), (8547, 10647), (9009, 10101)]