18355815

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:821

約数の個数: 40

約数和(自身を含む): 33488928

約数和(自身を除く): 15133113

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 743, 915, 1647, 2229, 2745, 3715, 4941, 6687, 8235, 11145, 20061, 24705, 33435, 45323, 60183, 100305, 135969, 226615, 300915, 407907, 679845, 1223721, 2039535, 3671163, 6118605, 18355815]

約数ペア:

[(1, 18355815), (3, 6118605), (5, 3671163), (9, 2039535), (15, 1223721), (27, 679845), (45, 407907), (61, 300915), (81, 226615), (135, 135969), (183, 100305), (305, 60183), (405, 45323), (549, 33435), (743, 24705), (915, 20061), (1647, 11145), (2229, 8235), (2745, 6687), (3715, 4941)]