81718812

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3907}}^1$

素因数の和:4007

約数の個数: 72

約数和(自身を含む): 238982016

約数和(自身を除く): 157263204

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 83, 84, 126, 166, 249, 252, 332, 498, 581, 747, 996, 1162, 1494, 1743, 2324, 2988, 3486, 3907, 5229, 6972, 7814, 10458, 11721, 15628, 20916, 23442, 27349, 35163, 46884, 54698, 70326, 82047, 109396, 140652, 164094, 246141, 324281, 328188, 492282, 648562, 972843, 984564, 1297124, 1945686, 2269967, 2918529, 3891372, 4539934, 5837058, 6809901, 9079868, 11674116, 13619802, 20429703, 27239604, 40859406, 81718812]

約数ペア:

[(1, 81718812), (2, 40859406), (3, 27239604), (4, 20429703), (6, 13619802), (7, 11674116), (9, 9079868), (12, 6809901), (14, 5837058), (18, 4539934), (21, 3891372), (28, 2918529), (36, 2269967), (42, 1945686), (63, 1297124), (83, 984564), (84, 972843), (126, 648562), (166, 492282), (249, 328188), (252, 324281), (332, 246141), (498, 164094), (581, 140652), (747, 109396), (996, 82047), (1162, 70326), (1494, 54698), (1743, 46884), (2324, 35163), (2988, 27349), (3486, 23442), (3907, 20916), (5229, 15628), (6972, 11721), (7814, 10458)]