81620532

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2063}}^1$

素因数の和:2237

約数の個数: 72

約数和(自身を含む): 237409536

約数和(自身を除く): 155789004

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 314, 471, 628, 942, 1099, 1413, 1884, 2063, 2198, 2826, 3297, 4126, 4396, 5652, 6189, 6594, 8252, 9891, 12378, 13188, 14441, 18567, 19782, 24756, 28882, 37134, 39564, 43323, 57764, 74268, 86646, 129969, 173292, 259938, 323891, 519876, 647782, 971673, 1295564, 1943346, 2267237, 2915019, 3886692, 4534474, 5830038, 6801711, 9068948, 11660076, 13603422, 20405133, 27206844, 40810266, 81620532]

約数ペア:

[(1, 81620532), (2, 40810266), (3, 27206844), (4, 20405133), (6, 13603422), (7, 11660076), (9, 9068948), (12, 6801711), (14, 5830038), (18, 4534474), (21, 3886692), (28, 2915019), (36, 2267237), (42, 1943346), (63, 1295564), (84, 971673), (126, 647782), (157, 519876), (252, 323891), (314, 259938), (471, 173292), (628, 129969), (942, 86646), (1099, 74268), (1413, 57764), (1884, 43323), (2063, 39564), (2198, 37134), (2826, 28882), (3297, 24756), (4126, 19782), (4396, 18567), (5652, 14441), (6189, 13188), (6594, 12378), (8252, 9891)]