18859568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12953}}^1$

素因数の和:12981

約数の個数: 40

約数和(自身を含む): 44976288

約数和(自身を除く): 26116720

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 12953, 25906, 51812, 90671, 103624, 168389, 181342, 207248, 336778, 362684, 673556, 725368, 1178723, 1347112, 1450736, 2357446, 2694224, 4714892, 9429784, 18859568]

約数ペア:

[(1, 18859568), (2, 9429784), (4, 4714892), (7, 2694224), (8, 2357446), (13, 1450736), (14, 1347112), (16, 1178723), (26, 725368), (28, 673556), (52, 362684), (56, 336778), (91, 207248), (104, 181342), (112, 168389), (182, 103624), (208, 90671), (364, 51812), (728, 25906), (1456, 12953)]