17994440

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1289}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 40635000

約数和(自身を除く): 22640560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1289, 1396, 1745, 2578, 2792, 3490, 5156, 6445, 6980, 10312, 12890, 13960, 25780, 51560, 449861, 899722, 1799444, 2249305, 3598888, 4498610, 8997220, 17994440]

約数ペア:

[(1, 17994440), (2, 8997220), (4, 4498610), (5, 3598888), (8, 2249305), (10, 1799444), (20, 899722), (40, 449861), (349, 51560), (698, 25780), (1289, 13960), (1396, 12890), (1745, 10312), (2578, 6980), (2792, 6445), (3490, 5156)]