51721720

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{4079}}^1$

素因数の和:4407

約数の個数: 32

約数和(自身を含む): 116769600

約数和(自身を除く): 65047880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 4079, 6340, 8158, 12680, 16316, 20395, 32632, 40790, 81580, 163160, 1293043, 2586086, 5172172, 6465215, 10344344, 12930430, 25860860, 51721720]

約数ペア:

[(1, 51721720), (2, 25860860), (4, 12930430), (5, 10344344), (8, 6465215), (10, 5172172), (20, 2586086), (40, 1293043), (317, 163160), (634, 81580), (1268, 40790), (1585, 32632), (2536, 20395), (3170, 16316), (4079, 12680), (6340, 8158)]