81229995

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:250

約数の個数: 144

約数和(自身を含む): 190146528

約数和(自身を除く): 108916533

約数列:

[1, 3, 5, 7, 9, 11, 15, 17, 21, 33, 35, 45, 49, 51, 55, 63, 77, 85, 99, 105, 119, 147, 153, 165, 187, 197, 231, 245, 255, 315, 357, 385, 441, 495, 539, 561, 591, 595, 693, 735, 765, 833, 935, 985, 1071, 1155, 1309, 1379, 1617, 1683, 1773, 1785, 2167, 2205, 2499, 2695, 2805, 2955, 3349, 3465, 3927, 4137, 4165, 4851, 5355, 6501, 6545, 6895, 7497, 8085, 8415, 8865, 9163, 9653, 10047, 10835, 11781, 12411, 12495, 15169, 16745, 19503, 19635, 20685, 23443, 24255, 27489, 28959, 30141, 32505, 36839, 37485, 45507, 45815, 48265, 50235, 58905, 62055, 70329, 75845, 82467, 86877, 97515, 106183, 110517, 117215, 136521, 137445, 144795, 150705, 164101, 184195, 210987, 227535, 257873, 318549, 331551, 351645, 412335, 434385, 492303, 530915, 552585, 682605, 773619, 820505, 955647, 1054935, 1289365, 1476909, 1592745, 1657755, 1805111, 2320857, 2461515, 3868095, 4778235, 5415333, 7384545, 9025555, 11604285, 16245999, 27076665, 81229995]

約数ペア:

[(1, 81229995), (3, 27076665), (5, 16245999), (7, 11604285), (9, 9025555), (11, 7384545), (15, 5415333), (17, 4778235), (21, 3868095), (33, 2461515), (35, 2320857), (45, 1805111), (49, 1657755), (51, 1592745), (55, 1476909), (63, 1289365), (77, 1054935), (85, 955647), (99, 820505), (105, 773619), (119, 682605), (147, 552585), (153, 530915), (165, 492303), (187, 434385), (197, 412335), (231, 351645), (245, 331551), (255, 318549), (315, 257873), (357, 227535), (385, 210987), (441, 184195), (495, 164101), (539, 150705), (561, 144795), (591, 137445), (595, 136521), (693, 117215), (735, 110517), (765, 106183), (833, 97515), (935, 86877), (985, 82467), (1071, 75845), (1155, 70329), (1309, 62055), (1379, 58905), (1617, 50235), (1683, 48265), (1773, 45815), (1785, 45507), (2167, 37485), (2205, 36839), (2499, 32505), (2695, 30141), (2805, 28959), (2955, 27489), (3349, 24255), (3465, 23443), (3927, 20685), (4137, 19635), (4165, 19503), (4851, 16745), (5355, 15169), (6501, 12495), (6545, 12411), (6895, 11781), (7497, 10835), (8085, 10047), (8415, 9653), (8865, 9163)]