20392809

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 30139776

約数和(自身を除く): 9746967

約数列:

[1, 3, 17, 37, 51, 101, 107, 111, 303, 321, 629, 1717, 1819, 1887, 3737, 3959, 5151, 5457, 10807, 11211, 11877, 32421, 63529, 67303, 183719, 190587, 201909, 399859, 551157, 1199577, 6797603, 20392809]

約数ペア:

[(1, 20392809), (3, 6797603), (17, 1199577), (37, 551157), (51, 399859), (101, 201909), (107, 190587), (111, 183719), (303, 67303), (321, 63529), (629, 32421), (1717, 11877), (1819, 11211), (1887, 10807), (3737, 5457), (3959, 5151)]