21129498

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:233

約数の個数: 80

約数和(自身を含む): 52039680

約数和(自身を除く): 30910182

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 79, 81, 117, 127, 158, 162, 234, 237, 254, 351, 381, 474, 702, 711, 762, 1027, 1053, 1143, 1422, 1651, 2054, 2106, 2133, 2286, 3081, 3302, 3429, 4266, 4953, 6162, 6399, 6858, 9243, 9906, 10033, 10287, 12798, 14859, 18486, 20066, 20574, 27729, 29718, 30099, 44577, 55458, 60198, 83187, 89154, 90297, 130429, 133731, 166374, 180594, 260858, 267462, 270891, 391287, 541782, 782574, 812673, 1173861, 1625346, 2347722, 3521583, 7043166, 10564749, 21129498]

約数ペア:

[(1, 21129498), (2, 10564749), (3, 7043166), (6, 3521583), (9, 2347722), (13, 1625346), (18, 1173861), (26, 812673), (27, 782574), (39, 541782), (54, 391287), (78, 270891), (79, 267462), (81, 260858), (117, 180594), (127, 166374), (158, 133731), (162, 130429), (234, 90297), (237, 89154), (254, 83187), (351, 60198), (381, 55458), (474, 44577), (702, 30099), (711, 29718), (762, 27729), (1027, 20574), (1053, 20066), (1143, 18486), (1422, 14859), (1651, 12798), (2054, 10287), (2106, 10033), (2133, 9906), (2286, 9243), (3081, 6858), (3302, 6399), (3429, 6162), (4266, 4953)]