18012519

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 32108544

約数和(自身を除く): 14096025

約数列:

[1, 3, 7, 9, 21, 23, 31, 63, 69, 93, 161, 207, 217, 279, 401, 483, 651, 713, 1203, 1449, 1953, 2139, 2807, 3609, 4991, 6417, 8421, 9223, 12431, 14973, 25263, 27669, 37293, 44919, 64561, 83007, 87017, 111879, 193683, 261051, 285913, 581049, 783153, 857739, 2001391, 2573217, 6004173, 18012519]

約数ペア:

[(1, 18012519), (3, 6004173), (7, 2573217), (9, 2001391), (21, 857739), (23, 783153), (31, 581049), (63, 285913), (69, 261051), (93, 193683), (161, 111879), (207, 87017), (217, 83007), (279, 64561), (401, 44919), (483, 37293), (651, 27669), (713, 25263), (1203, 14973), (1449, 12431), (1953, 9223), (2139, 8421), (2807, 6417), (3609, 4991)]