81856404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2371}}^1$

素因数の和:2525

約数の個数: 72

約数和(自身を含む): 238300608

約数和(自身を除く): 156444204

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 137, 252, 274, 411, 548, 822, 959, 1233, 1644, 1918, 2371, 2466, 2877, 3836, 4742, 4932, 5754, 7113, 8631, 9484, 11508, 14226, 16597, 17262, 21339, 28452, 33194, 34524, 42678, 49791, 66388, 85356, 99582, 149373, 199164, 298746, 324827, 597492, 649654, 974481, 1299308, 1948962, 2273789, 2923443, 3897924, 4547578, 5846886, 6821367, 9095156, 11693772, 13642734, 20464101, 27285468, 40928202, 81856404]

約数ペア:

[(1, 81856404), (2, 40928202), (3, 27285468), (4, 20464101), (6, 13642734), (7, 11693772), (9, 9095156), (12, 6821367), (14, 5846886), (18, 4547578), (21, 3897924), (28, 2923443), (36, 2273789), (42, 1948962), (63, 1299308), (84, 974481), (126, 649654), (137, 597492), (252, 324827), (274, 298746), (411, 199164), (548, 149373), (822, 99582), (959, 85356), (1233, 66388), (1644, 49791), (1918, 42678), (2371, 34524), (2466, 33194), (2877, 28452), (3836, 21339), (4742, 17262), (4932, 16597), (5754, 14226), (7113, 11508), (8631, 9484)]