18797665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 25280640

約数和(自身を除く): 6482975

約数列:

[1, 5, 17, 37, 43, 85, 139, 185, 215, 629, 695, 731, 1591, 2363, 3145, 3655, 5143, 5977, 7955, 11815, 25715, 27047, 29885, 87431, 101609, 135235, 221149, 437155, 508045, 1105745, 3759533, 18797665]

約数ペア:

[(1, 18797665), (5, 3759533), (17, 1105745), (37, 508045), (43, 437155), (85, 221149), (139, 135235), (185, 101609), (215, 87431), (629, 29885), (695, 27047), (731, 25715), (1591, 11815), (2363, 7955), (3145, 5977), (3655, 5143)]