256880988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4127}}^1$

素因数の和:4176

約数の個数: 144

約数和(自身を含む): 841451520

約数和(自身を除く): 584570532

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 19, 21, 26, 28, 36, 38, 39, 42, 52, 57, 63, 76, 78, 84, 91, 114, 117, 126, 133, 156, 171, 182, 228, 234, 247, 252, 266, 273, 342, 364, 399, 468, 494, 532, 546, 684, 741, 798, 819, 988, 1092, 1197, 1482, 1596, 1638, 1729, 2223, 2394, 2964, 3276, 3458, 4127, 4446, 4788, 5187, 6916, 8254, 8892, 10374, 12381, 15561, 16508, 20748, 24762, 28889, 31122, 37143, 49524, 53651, 57778, 62244, 74286, 78413, 86667, 107302, 115556, 148572, 156826, 160953, 173334, 214604, 235239, 260001, 313652, 321906, 346668, 375557, 470478, 482859, 520002, 548891, 643812, 705717, 751114, 940956, 965718, 1019369, 1040004, 1097782, 1126671, 1411434, 1502228, 1646673, 1931436, 2038738, 2195564, 2253342, 2822868, 3058107, 3293346, 3380013, 4077476, 4506684, 4940019, 6116214, 6586692, 6760026, 7135583, 9174321, 9880038, 12232428, 13520052, 14271166, 18348642, 19760076, 21406749, 28542332, 36697284, 42813498, 64220247, 85626996, 128440494, 256880988]

約数ペア:

[(1, 256880988), (2, 128440494), (3, 85626996), (4, 64220247), (6, 42813498), (7, 36697284), (9, 28542332), (12, 21406749), (13, 19760076), (14, 18348642), (18, 14271166), (19, 13520052), (21, 12232428), (26, 9880038), (28, 9174321), (36, 7135583), (38, 6760026), (39, 6586692), (42, 6116214), (52, 4940019), (57, 4506684), (63, 4077476), (76, 3380013), (78, 3293346), (84, 3058107), (91, 2822868), (114, 2253342), (117, 2195564), (126, 2038738), (133, 1931436), (156, 1646673), (171, 1502228), (182, 1411434), (228, 1126671), (234, 1097782), (247, 1040004), (252, 1019369), (266, 965718), (273, 940956), (342, 751114), (364, 705717), (399, 643812), (468, 548891), (494, 520002), (532, 482859), (546, 470478), (684, 375557), (741, 346668), (798, 321906), (819, 313652), (988, 260001), (1092, 235239), (1197, 214604), (1482, 173334), (1596, 160953), (1638, 156826), (1729, 148572), (2223, 115556), (2394, 107302), (2964, 86667), (3276, 78413), (3458, 74286), (4127, 62244), (4446, 57778), (4788, 53651), (5187, 49524), (6916, 37143), (8254, 31122), (8892, 28889), (10374, 24762), (12381, 20748), (15561, 16508)]