81805716

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{601}}^1$

素因数の和:829

約数の個数: 72

約数和(自身を含む): 219128000

約数和(自身を除く): 137322284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 199, 228, 342, 398, 597, 601, 684, 796, 1194, 1202, 1791, 1803, 2388, 2404, 3582, 3606, 3781, 5409, 7164, 7212, 7562, 10818, 11343, 11419, 15124, 21636, 22686, 22838, 34029, 34257, 45372, 45676, 68058, 68514, 102771, 119599, 136116, 137028, 205542, 239198, 358797, 411084, 478396, 717594, 1076391, 1435188, 2152782, 2272381, 4305564, 4544762, 6817143, 9089524, 13634286, 20451429, 27268572, 40902858, 81805716]

約数ペア:

[(1, 81805716), (2, 40902858), (3, 27268572), (4, 20451429), (6, 13634286), (9, 9089524), (12, 6817143), (18, 4544762), (19, 4305564), (36, 2272381), (38, 2152782), (57, 1435188), (76, 1076391), (114, 717594), (171, 478396), (199, 411084), (228, 358797), (342, 239198), (398, 205542), (597, 137028), (601, 136116), (684, 119599), (796, 102771), (1194, 68514), (1202, 68058), (1791, 45676), (1803, 45372), (2388, 34257), (2404, 34029), (3582, 22838), (3606, 22686), (3781, 21636), (5409, 15124), (7164, 11419), (7212, 11343), (7562, 10818)]