1215203440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1380913}}^1$

素因数の和:1380937

約数の個数: 40

約数和(自身を含む): 3082200048

約数和(自身を除く): 1866996608

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 1380913, 2761826, 5523652, 6904565, 11047304, 13809130, 15190043, 22094608, 27618260, 30380086, 55236520, 60760172, 75950215, 110473040, 121520344, 151900430, 243040688, 303800860, 607601720, 1215203440]

約数ペア:

[(1, 1215203440), (2, 607601720), (4, 303800860), (5, 243040688), (8, 151900430), (10, 121520344), (11, 110473040), (16, 75950215), (20, 60760172), (22, 55236520), (40, 30380086), (44, 27618260), (55, 22094608), (80, 15190043), (88, 13809130), (110, 11047304), (176, 6904565), (220, 5523652), (440, 2761826), (880, 1380913)]