278327745

素因数分解:

$3^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{3001}}^1$

素因数の和:3247

約数の個数: 40

約数和(自身を含む): 501273960

約数和(自身を除く): 222946215

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 229, 405, 687, 1145, 2061, 3001, 3435, 6183, 9003, 10305, 15005, 18549, 27009, 30915, 45015, 81027, 92745, 135045, 243081, 405135, 687229, 1215405, 2061687, 3436145, 6185061, 10308435, 18555183, 30925305, 55665549, 92775915, 278327745]

約数ペア:

[(1, 278327745), (3, 92775915), (5, 55665549), (9, 30925305), (15, 18555183), (27, 10308435), (45, 6185061), (81, 3436145), (135, 2061687), (229, 1215405), (405, 687229), (687, 405135), (1145, 243081), (2061, 135045), (3001, 92745), (3435, 81027), (6183, 45015), (9003, 30915), (10305, 27009), (15005, 18549)]