21785580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{953}}^1$

素因数の和:1095

約数の個数: 72

約数和(自身を含む): 66673152

約数和(自身を除く): 44887572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 381, 508, 635, 762, 953, 1143, 1270, 1524, 1905, 1906, 2286, 2540, 2859, 3810, 3812, 4572, 4765, 5715, 5718, 7620, 8577, 9530, 11430, 11436, 14295, 17154, 19060, 22860, 28590, 34308, 42885, 57180, 85770, 121031, 171540, 242062, 363093, 484124, 605155, 726186, 1089279, 1210310, 1452372, 1815465, 2178558, 2420620, 3630930, 4357116, 5446395, 7261860, 10892790, 21785580]

約数ペア:

[(1, 21785580), (2, 10892790), (3, 7261860), (4, 5446395), (5, 4357116), (6, 3630930), (9, 2420620), (10, 2178558), (12, 1815465), (15, 1452372), (18, 1210310), (20, 1089279), (30, 726186), (36, 605155), (45, 484124), (60, 363093), (90, 242062), (127, 171540), (180, 121031), (254, 85770), (381, 57180), (508, 42885), (635, 34308), (762, 28590), (953, 22860), (1143, 19060), (1270, 17154), (1524, 14295), (1905, 11436), (1906, 11430), (2286, 9530), (2540, 8577), (2859, 7620), (3810, 5718), (3812, 5715), (4572, 4765)]