18591581905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1\times {\mathrm{23143}}^1$

素因数の和:23905

約数の個数: 32

約数和(自身を含む): 25475433984

約数和(自身を除く): 6883852079

約数列:

[1, 5, 13, 17, 65, 85, 221, 727, 1105, 3635, 9451, 12359, 23143, 47255, 61795, 115715, 160667, 300859, 393431, 803335, 1504295, 1967155, 5114603, 16824961, 25573015, 84124805, 218724493, 286024337, 1093622465, 1430121685, 3718316381, 18591581905]

約数ペア:

[(1, 18591581905), (5, 3718316381), (13, 1430121685), (17, 1093622465), (65, 286024337), (85, 218724493), (221, 84124805), (727, 25573015), (1105, 16824961), (3635, 5114603), (9451, 1967155), (12359, 1504295), (23143, 803335), (47255, 393431), (61795, 300859), (115715, 160667)]