18157971

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 28127232

約数和(自身を除く): 9969261

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 299, 403, 653, 713, 897, 1209, 1959, 2139, 8489, 9269, 15019, 20243, 25467, 27807, 45057, 60729, 195247, 263159, 465589, 585741, 789477, 1396767, 6052657, 18157971]

約数ペア:

[(1, 18157971), (3, 6052657), (13, 1396767), (23, 789477), (31, 585741), (39, 465589), (69, 263159), (93, 195247), (299, 60729), (403, 45057), (653, 27807), (713, 25467), (897, 20243), (1209, 15019), (1959, 9269), (2139, 8489)]