21000751122

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:644

約数の個数: 128

約数和(自身を含む): 47109017088

約数和(自身を除く): 26108265966

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 123, 151, 157, 246, 277, 302, 314, 453, 471, 533, 554, 831, 906, 942, 1066, 1599, 1662, 1963, 2041, 3198, 3601, 3926, 4082, 5889, 6123, 6191, 6437, 7202, 10803, 11357, 11778, 12246, 12382, 12874, 18573, 19311, 21606, 22714, 23707, 34071, 37146, 38622, 41827, 43489, 47414, 68142, 71121, 80483, 83654, 83681, 86978, 125481, 130467, 142242, 147641, 160966, 167362, 241449, 250962, 251043, 260934, 295282, 308191, 442923, 482898, 502086, 543751, 565357, 616382, 885846, 924573, 971987, 1087502, 1130714, 1631253, 1696071, 1714907, 1783049, 1849146, 1943974, 2915961, 3262506, 3392142, 3429814, 3566098, 5144721, 5349147, 5831922, 6566839, 10289442, 10698294, 12635831, 13133678, 19700517, 22293791, 23179637, 25271662, 37907493, 39401034, 44587582, 46359274, 66881373, 69538911, 75814986, 85368907, 133762746, 139077822, 170737814, 256106721, 269240399, 512213442, 538480798, 807721197, 1615442394, 3500125187, 7000250374, 10500375561, 21000751122]

約数ペア:

[(1, 21000751122), (2, 10500375561), (3, 7000250374), (6, 3500125187), (13, 1615442394), (26, 807721197), (39, 538480798), (41, 512213442), (78, 269240399), (82, 256106721), (123, 170737814), (151, 139077822), (157, 133762746), (246, 85368907), (277, 75814986), (302, 69538911), (314, 66881373), (453, 46359274), (471, 44587582), (533, 39401034), (554, 37907493), (831, 25271662), (906, 23179637), (942, 22293791), (1066, 19700517), (1599, 13133678), (1662, 12635831), (1963, 10698294), (2041, 10289442), (3198, 6566839), (3601, 5831922), (3926, 5349147), (4082, 5144721), (5889, 3566098), (6123, 3429814), (6191, 3392142), (6437, 3262506), (7202, 2915961), (10803, 1943974), (11357, 1849146), (11778, 1783049), (12246, 1714907), (12382, 1696071), (12874, 1631253), (18573, 1130714), (19311, 1087502), (21606, 971987), (22714, 924573), (23707, 885846), (34071, 616382), (37146, 565357), (38622, 543751), (41827, 502086), (43489, 482898), (47414, 442923), (68142, 308191), (71121, 295282), (80483, 260934), (83654, 251043), (83681, 250962), (86978, 241449), (125481, 167362), (130467, 160966), (142242, 147641)]