21291245997

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:391

約数の個数: 128

約数和(自身を含む): 35562455040

約数和(自身を除く): 14271209043

約数列:

[1, 3, 7, 21, 31, 37, 67, 79, 93, 111, 167, 201, 217, 237, 259, 469, 501, 553, 651, 777, 1147, 1169, 1407, 1659, 2077, 2449, 2479, 2923, 3441, 3507, 5177, 5293, 6179, 6231, 7347, 7437, 8029, 8769, 11189, 13193, 14539, 15531, 15879, 17143, 17353, 18537, 20461, 24087, 33567, 36239, 37051, 39579, 43253, 43617, 51429, 52059, 61383, 76849, 78323, 90613, 92351, 108717, 111153, 129759, 164083, 191549, 195841, 230547, 234969, 271839, 277053, 346859, 408983, 413993, 488141, 492249, 537943, 574647, 587523, 634291, 883931, 1040577, 1148581, 1226949, 1241979, 1340843, 1370887, 1464423, 1613829, 1902873, 2428013, 2651793, 2862881, 2897951, 3416987, 3445743, 4022529, 4112661, 6071071, 6187517, 7284039, 8588643, 8693853, 10250961, 12833783, 15132371, 18213213, 18562551, 27401861, 32705447, 38501349, 42497497, 45397113, 82205583, 89836481, 98116341, 105926597, 127492491, 191813027, 228938129, 269509443, 317779791, 575439081, 686814387, 1013868857, 3041606571, 7097081999, 21291245997]

約数ペア:

[(1, 21291245997), (3, 7097081999), (7, 3041606571), (21, 1013868857), (31, 686814387), (37, 575439081), (67, 317779791), (79, 269509443), (93, 228938129), (111, 191813027), (167, 127492491), (201, 105926597), (217, 98116341), (237, 89836481), (259, 82205583), (469, 45397113), (501, 42497497), (553, 38501349), (651, 32705447), (777, 27401861), (1147, 18562551), (1169, 18213213), (1407, 15132371), (1659, 12833783), (2077, 10250961), (2449, 8693853), (2479, 8588643), (2923, 7284039), (3441, 6187517), (3507, 6071071), (5177, 4112661), (5293, 4022529), (6179, 3445743), (6231, 3416987), (7347, 2897951), (7437, 2862881), (8029, 2651793), (8769, 2428013), (11189, 1902873), (13193, 1613829), (14539, 1464423), (15531, 1370887), (15879, 1340843), (17143, 1241979), (17353, 1226949), (18537, 1148581), (20461, 1040577), (24087, 883931), (33567, 634291), (36239, 587523), (37051, 574647), (39579, 537943), (43253, 492249), (43617, 488141), (51429, 413993), (52059, 408983), (61383, 346859), (76849, 277053), (78323, 271839), (90613, 234969), (92351, 230547), (108717, 195841), (111153, 191549), (129759, 164083)]