51561620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3301}}^1$

素因数の和:3392

約数の個数: 48

約数和(自身を含む): 119822976

約数和(自身を除く): 68261356

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3301, 3905, 6602, 7810, 13204, 15620, 16505, 33010, 36311, 66020, 72622, 145244, 181555, 234371, 363110, 468742, 726220, 937484, 1171855, 2343710, 2578081, 4687420, 5156162, 10312324, 12890405, 25780810, 51561620]

約数ペア:

[(1, 51561620), (2, 25780810), (4, 12890405), (5, 10312324), (10, 5156162), (11, 4687420), (20, 2578081), (22, 2343710), (44, 1171855), (55, 937484), (71, 726220), (110, 468742), (142, 363110), (220, 234371), (284, 181555), (355, 145244), (710, 72622), (781, 66020), (1420, 36311), (1562, 33010), (3124, 16505), (3301, 15620), (3905, 13204), (6602, 7810)]