51988760

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 120722400

約数和(自身を除く): 68733640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 137, 179, 212, 265, 274, 358, 424, 530, 548, 685, 716, 895, 1060, 1096, 1370, 1432, 1790, 2120, 2740, 3580, 5480, 7160, 7261, 9487, 14522, 18974, 24523, 29044, 36305, 37948, 47435, 49046, 58088, 72610, 75896, 94870, 98092, 122615, 145220, 189740, 196184, 245230, 290440, 379480, 490460, 980920, 1299719, 2599438, 5198876, 6498595, 10397752, 12997190, 25994380, 51988760]

約数ペア:

[(1, 51988760), (2, 25994380), (4, 12997190), (5, 10397752), (8, 6498595), (10, 5198876), (20, 2599438), (40, 1299719), (53, 980920), (106, 490460), (137, 379480), (179, 290440), (212, 245230), (265, 196184), (274, 189740), (358, 145220), (424, 122615), (530, 98092), (548, 94870), (685, 75896), (716, 72610), (895, 58088), (1060, 49046), (1096, 47435), (1370, 37948), (1432, 36305), (1790, 29044), (2120, 24523), (2740, 18974), (3580, 14522), (5480, 9487), (7160, 7261)]