21608054

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19034506

約数列:

[1, 2, 13, 17, 19, 26, 31, 34, 38, 62, 83, 166, 221, 247, 323, 403, 442, 494, 527, 589, 646, 806, 1054, 1079, 1178, 1411, 1577, 2158, 2573, 2822, 3154, 4199, 5146, 6851, 7657, 8398, 10013, 13702, 15314, 18343, 20026, 20501, 26809, 33449, 36686, 41002, 43741, 48887, 53618, 66898, 87482, 97774, 130169, 260338, 348517, 568633, 635531, 697034, 831079, 1137266, 1271062, 1662158, 10804027, 21608054]

約数ペア:

[(1, 21608054), (2, 10804027), (13, 1662158), (17, 1271062), (19, 1137266), (26, 831079), (31, 697034), (34, 635531), (38, 568633), (62, 348517), (83, 260338), (166, 130169), (221, 97774), (247, 87482), (323, 66898), (403, 53618), (442, 48887), (494, 43741), (527, 41002), (589, 36686), (646, 33449), (806, 26809), (1054, 20501), (1079, 20026), (1178, 18343), (1411, 15314), (1577, 13702), (2158, 10013), (2573, 8398), (2822, 7657), (3154, 6851), (4199, 5146)]