18855423

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 30492000

約数和(自身を除く): 11636577

約数列:

[1, 3, 9, 23, 27, 29, 69, 81, 87, 207, 261, 349, 621, 667, 783, 1047, 1863, 2001, 2349, 3141, 6003, 8027, 9423, 10121, 18009, 24081, 28269, 30363, 54027, 72243, 91089, 216729, 232783, 273267, 650187, 698349, 819801, 2095047, 6285141, 18855423]

約数ペア:

[(1, 18855423), (3, 6285141), (9, 2095047), (23, 819801), (27, 698349), (29, 650187), (69, 273267), (81, 232783), (87, 216729), (207, 91089), (261, 72243), (349, 54027), (621, 30363), (667, 28269), (783, 24081), (1047, 18009), (1863, 10121), (2001, 9423), (2349, 8027), (3141, 6003)]