31991480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19507}}^1$

素因数の和:19559

約数の個数: 32

約数和(自身を含む): 73740240

約数和(自身を除く): 41748760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19507, 39014, 78028, 97535, 156056, 195070, 390140, 780280, 799787, 1599574, 3199148, 3998935, 6398296, 7997870, 15995740, 31991480]

約数ペア:

[(1, 31991480), (2, 15995740), (4, 7997870), (5, 6398296), (8, 3998935), (10, 3199148), (20, 1599574), (40, 799787), (41, 780280), (82, 390140), (164, 195070), (205, 156056), (328, 97535), (410, 78028), (820, 39014), (1640, 19507)]