87973970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 189775872

約数和(自身を除く): 101801902

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 71, 142, 155, 217, 310, 355, 434, 497, 571, 710, 994, 1085, 1142, 2170, 2201, 2485, 2855, 3997, 4402, 4970, 5710, 7994, 11005, 15407, 17701, 19985, 22010, 30814, 35402, 39970, 40541, 77035, 81082, 88505, 123907, 154070, 177010, 202705, 247814, 283787, 405410, 567574, 619535, 1239070, 1256771, 1418935, 2513542, 2837870, 6283855, 8797397, 12567710, 17594794, 43986985, 87973970]

約数ペア:

[(1, 87973970), (2, 43986985), (5, 17594794), (7, 12567710), (10, 8797397), (14, 6283855), (31, 2837870), (35, 2513542), (62, 1418935), (70, 1256771), (71, 1239070), (142, 619535), (155, 567574), (217, 405410), (310, 283787), (355, 247814), (434, 202705), (497, 177010), (571, 154070), (710, 123907), (994, 88505), (1085, 81082), (1142, 77035), (2170, 40541), (2201, 39970), (2485, 35402), (2855, 30814), (3997, 22010), (4402, 19985), (4970, 17701), (5710, 15407), (7994, 11005)]