18380427

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 28471296

約数和(自身を除く): 10090869

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 299, 403, 661, 713, 897, 1209, 1983, 2139, 8593, 9269, 15203, 20491, 25779, 27807, 45609, 61473, 197639, 266383, 471293, 592917, 799149, 1413879, 6126809, 18380427]

約数ペア:

[(1, 18380427), (3, 6126809), (13, 1413879), (23, 799149), (31, 592917), (39, 471293), (69, 266383), (93, 197639), (299, 61473), (403, 45609), (661, 27807), (713, 25779), (897, 20491), (1209, 15203), (1983, 9269), (2139, 8593)]