28403781

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 47628288

約数和(自身を除く): 19224507

約数列:

[1, 3, 7, 21, 23, 31, 49, 69, 93, 147, 161, 217, 271, 483, 651, 713, 813, 1127, 1519, 1897, 2139, 3381, 4557, 4991, 5691, 6233, 8401, 13279, 14973, 18699, 25203, 34937, 39837, 43631, 58807, 104811, 130893, 176421, 193223, 305417, 411649, 579669, 916251, 1234947, 1352561, 4057683, 9467927, 28403781]

約数ペア:

[(1, 28403781), (3, 9467927), (7, 4057683), (21, 1352561), (23, 1234947), (31, 916251), (49, 579669), (69, 411649), (93, 305417), (147, 193223), (161, 176421), (217, 130893), (271, 104811), (483, 58807), (651, 43631), (713, 39837), (813, 34937), (1127, 25203), (1519, 18699), (1897, 14973), (2139, 13279), (3381, 8401), (4557, 6233), (4991, 5691)]