19757556

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 63516544

約数和(自身を除く): 43758988

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 37, 39, 42, 52, 63, 74, 78, 84, 91, 111, 117, 126, 148, 156, 163, 182, 222, 234, 252, 259, 273, 326, 333, 364, 444, 468, 481, 489, 518, 546, 652, 666, 777, 819, 962, 978, 1036, 1092, 1141, 1332, 1443, 1467, 1554, 1638, 1924, 1956, 2119, 2282, 2331, 2886, 2934, 3108, 3276, 3367, 3423, 4238, 4329, 4564, 4662, 5772, 5868, 6031, 6357, 6734, 6846, 8476, 8658, 9324, 10101, 10269, 12062, 12714, 13468, 13692, 14833, 17316, 18093, 19071, 20202, 20538, 24124, 25428, 29666, 30303, 36186, 38142, 40404, 41076, 42217, 44499, 54279, 59332, 60606, 72372, 76284, 78403, 84434, 88998, 108558, 121212, 126651, 133497, 156806, 168868, 177996, 217116, 235209, 253302, 266994, 313612, 379953, 470418, 506604, 533988, 548821, 705627, 759906, 940836, 1097642, 1411254, 1519812, 1646463, 2195284, 2822508, 3292926, 4939389, 6585852, 9878778, 19757556]

約数ペア:

[(1, 19757556), (2, 9878778), (3, 6585852), (4, 4939389), (6, 3292926), (7, 2822508), (9, 2195284), (12, 1646463), (13, 1519812), (14, 1411254), (18, 1097642), (21, 940836), (26, 759906), (28, 705627), (36, 548821), (37, 533988), (39, 506604), (42, 470418), (52, 379953), (63, 313612), (74, 266994), (78, 253302), (84, 235209), (91, 217116), (111, 177996), (117, 168868), (126, 156806), (148, 133497), (156, 126651), (163, 121212), (182, 108558), (222, 88998), (234, 84434), (252, 78403), (259, 76284), (273, 72372), (326, 60606), (333, 59332), (364, 54279), (444, 44499), (468, 42217), (481, 41076), (489, 40404), (518, 38142), (546, 36186), (652, 30303), (666, 29666), (777, 25428), (819, 24124), (962, 20538), (978, 20202), (1036, 19071), (1092, 18093), (1141, 17316), (1332, 14833), (1443, 13692), (1467, 13468), (1554, 12714), (1638, 12062), (1924, 10269), (1956, 10101), (2119, 9324), (2282, 8658), (2331, 8476), (2886, 6846), (2934, 6734), (3108, 6357), (3276, 6031), (3367, 5868), (3423, 5772), (4238, 4662), (4329, 4564)]