20199891664

素因数分解:

$2^4\times {\mathrm{971}}^1\times {\mathrm{1300199}}^1$

素因数の和:1301178

約数の個数: 20

約数和(自身を含む): 39177626400

約数和(自身を除く): 18977734736

約数列:

[1, 2, 4, 8, 16, 971, 1942, 3884, 7768, 15536, 1300199, 2600398, 5200796, 10401592, 20803184, 1262493229, 2524986458, 5049972916, 10099945832, 20199891664]

約数ペア:

[(1, 20199891664), (2, 10099945832), (4, 5049972916), (8, 2524986458), (16, 1262493229), (971, 20803184), (1942, 10401592), (3884, 5200796), (7768, 2600398), (15536, 1300199)]