51691480

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1979}}^1$

素因数の和:2643

約数の個数: 32

約数和(自身を含む): 116542800

約数和(自身を除く): 64851320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 1979, 2612, 3265, 3958, 5224, 6530, 7916, 9895, 13060, 15832, 19790, 26120, 39580, 79160, 1292287, 2584574, 5169148, 6461435, 10338296, 12922870, 25845740, 51691480]

約数ペア:

[(1, 51691480), (2, 25845740), (4, 12922870), (5, 10338296), (8, 6461435), (10, 5169148), (20, 2584574), (40, 1292287), (653, 79160), (1306, 39580), (1979, 26120), (2612, 19790), (3265, 15832), (3958, 13060), (5224, 9895), (6530, 7916)]