18803421

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2551}}^1$

素因数の和:2583

約数の個数: 40

約数和(自身を含む): 34584704

約数和(自身を除く): 15781283

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2551, 7371, 7653, 17857, 22959, 33163, 53571, 68877, 99489, 160713, 206631, 232141, 298467, 482139, 696423, 895401, 1446417, 2089269, 2686203, 6267807, 18803421]

約数ペア:

[(1, 18803421), (3, 6267807), (7, 2686203), (9, 2089269), (13, 1446417), (21, 895401), (27, 696423), (39, 482139), (63, 298467), (81, 232141), (91, 206631), (117, 160713), (189, 99489), (273, 68877), (351, 53571), (567, 33163), (819, 22959), (1053, 17857), (2457, 7653), (2551, 7371)]