20904156

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:745

約数の個数: 120

約数和(自身を含む): 67353440

約数和(自身を除く): 46449284

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 52, 54, 63, 78, 81, 84, 91, 108, 117, 126, 156, 162, 182, 189, 234, 252, 273, 324, 351, 364, 378, 468, 546, 567, 702, 709, 756, 819, 1053, 1092, 1134, 1404, 1418, 1638, 2106, 2127, 2268, 2457, 2836, 3276, 4212, 4254, 4914, 4963, 6381, 7371, 8508, 9217, 9828, 9926, 12762, 14742, 14889, 18434, 19143, 19852, 25524, 27651, 29484, 29778, 36868, 38286, 44667, 55302, 57429, 59556, 64519, 76572, 82953, 89334, 110604, 114858, 129038, 134001, 165906, 178668, 193557, 229716, 248859, 258076, 268002, 331812, 387114, 402003, 497718, 536004, 580671, 746577, 774228, 804006, 995436, 1161342, 1493154, 1608012, 1742013, 2322684, 2986308, 3484026, 5226039, 6968052, 10452078, 20904156]

約数ペア:

[(1, 20904156), (2, 10452078), (3, 6968052), (4, 5226039), (6, 3484026), (7, 2986308), (9, 2322684), (12, 1742013), (13, 1608012), (14, 1493154), (18, 1161342), (21, 995436), (26, 804006), (27, 774228), (28, 746577), (36, 580671), (39, 536004), (42, 497718), (52, 402003), (54, 387114), (63, 331812), (78, 268002), (81, 258076), (84, 248859), (91, 229716), (108, 193557), (117, 178668), (126, 165906), (156, 134001), (162, 129038), (182, 114858), (189, 110604), (234, 89334), (252, 82953), (273, 76572), (324, 64519), (351, 59556), (364, 57429), (378, 55302), (468, 44667), (546, 38286), (567, 36868), (702, 29778), (709, 29484), (756, 27651), (819, 25524), (1053, 19852), (1092, 19143), (1134, 18434), (1404, 14889), (1418, 14742), (1638, 12762), (2106, 9926), (2127, 9828), (2268, 9217), (2457, 8508), (2836, 7371), (3276, 6381), (4212, 4963), (4254, 4914)]