21791802525

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{664891}}^1$

素因数の和:664946

約数の個数: 48

約数和(自身を含む): 39574371840

約数和(自身を除く): 17782569315

約数列:

[1, 3, 5, 15, 19, 23, 25, 57, 69, 75, 95, 115, 285, 345, 437, 475, 575, 1311, 1425, 1725, 2185, 6555, 10925, 32775, 664891, 1994673, 3324455, 9973365, 12632929, 15292493, 16622275, 37898787, 45877479, 49866825, 63164645, 76462465, 189493935, 229387395, 290557367, 315823225, 382312325, 871672101, 947469675, 1146936975, 1452786835, 4358360505, 7263934175, 21791802525]

約数ペア:

[(1, 21791802525), (3, 7263934175), (5, 4358360505), (15, 1452786835), (19, 1146936975), (23, 947469675), (25, 871672101), (57, 382312325), (69, 315823225), (75, 290557367), (95, 229387395), (115, 189493935), (285, 76462465), (345, 63164645), (437, 49866825), (475, 45877479), (575, 37898787), (1311, 16622275), (1425, 15292493), (1725, 12632929), (2185, 9973365), (6555, 3324455), (10925, 1994673), (32775, 664891)]