71720560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20849}}^1$

素因数の和:20905

約数の個数: 40

約数和(自身を含む): 170636400

約数和(自身を除く): 98915840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 20849, 41698, 83396, 104245, 166792, 208490, 333584, 416980, 833960, 896507, 1667920, 1793014, 3586028, 4482535, 7172056, 8965070, 14344112, 17930140, 35860280, 71720560]

約数ペア:

[(1, 71720560), (2, 35860280), (4, 17930140), (5, 14344112), (8, 8965070), (10, 7172056), (16, 4482535), (20, 3586028), (40, 1793014), (43, 1667920), (80, 896507), (86, 833960), (172, 416980), (215, 333584), (344, 208490), (430, 166792), (688, 104245), (860, 83396), (1720, 41698), (3440, 20849)]