28420730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 56445984

約数和(自身を除く): 28025254

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 169, 251, 335, 338, 502, 670, 845, 871, 1255, 1690, 1742, 2510, 3263, 4355, 6526, 8710, 11323, 16315, 16817, 22646, 32630, 33634, 42419, 56615, 84085, 84838, 113230, 168170, 212095, 218621, 424190, 437242, 1093105, 2186210, 2842073, 5684146, 14210365, 28420730]

約数ペア:

[(1, 28420730), (2, 14210365), (5, 5684146), (10, 2842073), (13, 2186210), (26, 1093105), (65, 437242), (67, 424190), (130, 218621), (134, 212095), (169, 168170), (251, 113230), (335, 84838), (338, 84085), (502, 56615), (670, 42419), (845, 33634), (871, 32630), (1255, 22646), (1690, 16817), (1742, 16315), (2510, 11323), (3263, 8710), (4355, 6526)]