138840920

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{829}}^1$

素因数の和:972

約数の個数: 64

約数和(自身を含む): 322704000

約数和(自身を除く): 183863080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 79, 106, 158, 212, 265, 316, 395, 424, 530, 632, 790, 829, 1060, 1580, 1658, 2120, 3160, 3316, 4145, 4187, 6632, 8290, 8374, 16580, 16748, 20935, 33160, 33496, 41870, 43937, 65491, 83740, 87874, 130982, 167480, 175748, 219685, 261964, 327455, 351496, 439370, 523928, 654910, 878740, 1309820, 1757480, 2619640, 3471023, 6942046, 13884092, 17355115, 27768184, 34710230, 69420460, 138840920]

約数ペア:

[(1, 138840920), (2, 69420460), (4, 34710230), (5, 27768184), (8, 17355115), (10, 13884092), (20, 6942046), (40, 3471023), (53, 2619640), (79, 1757480), (106, 1309820), (158, 878740), (212, 654910), (265, 523928), (316, 439370), (395, 351496), (424, 327455), (530, 261964), (632, 219685), (790, 175748), (829, 167480), (1060, 130982), (1580, 87874), (1658, 83740), (2120, 65491), (3160, 43937), (3316, 41870), (4145, 33496), (4187, 33160), (6632, 20935), (8290, 16748), (8374, 16580)]