19540521

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 39355008

約数和(自身を除く): 19814487

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 63, 77, 81, 91, 99, 117, 143, 189, 231, 241, 273, 297, 351, 429, 567, 693, 723, 819, 891, 1001, 1053, 1287, 1687, 2079, 2169, 2457, 2651, 3003, 3133, 3861, 5061, 6237, 6507, 7371, 7953, 9009, 9399, 11583, 15183, 18557, 19521, 21931, 23859, 27027, 28197, 34463, 45549, 55671, 65793, 71577, 81081, 84591, 103389, 136647, 167013, 197379, 214731, 241241, 253773, 310167, 501039, 592137, 723723, 930501, 1503117, 1776411, 2171169, 2791503, 6513507, 19540521]

約数ペア:

[(1, 19540521), (3, 6513507), (7, 2791503), (9, 2171169), (11, 1776411), (13, 1503117), (21, 930501), (27, 723723), (33, 592137), (39, 501039), (63, 310167), (77, 253773), (81, 241241), (91, 214731), (99, 197379), (117, 167013), (143, 136647), (189, 103389), (231, 84591), (241, 81081), (273, 71577), (297, 65793), (351, 55671), (429, 45549), (567, 34463), (693, 28197), (723, 27027), (819, 23859), (891, 21931), (1001, 19521), (1053, 18557), (1287, 15183), (1687, 11583), (2079, 9399), (2169, 9009), (2457, 7953), (2651, 7371), (3003, 6507), (3133, 6237), (3861, 5061)]