61920860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 134719200

約数和(自身を除く): 72798340

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 809, 860, 890, 1618, 1780, 3236, 3827, 4045, 7654, 8090, 15308, 16180, 19135, 34787, 38270, 69574, 72001, 76540, 139148, 144002, 173935, 288004, 347870, 360005, 695740, 720010, 1440020, 3096043, 6192086, 12384172, 15480215, 30960430, 61920860]

約数ペア:

[(1, 61920860), (2, 30960430), (4, 15480215), (5, 12384172), (10, 6192086), (20, 3096043), (43, 1440020), (86, 720010), (89, 695740), (172, 360005), (178, 347870), (215, 288004), (356, 173935), (430, 144002), (445, 139148), (809, 76540), (860, 72001), (890, 69574), (1618, 38270), (1780, 34787), (3236, 19135), (3827, 16180), (4045, 15308), (7654, 8090)]