28220720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32069}}^1$

素因数の和:32093

約数の個数: 40

約数和(自身を含む): 71580240

約数和(自身を除く): 43359520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 32069, 64138, 128276, 160345, 256552, 320690, 352759, 513104, 641380, 705518, 1282760, 1411036, 1763795, 2565520, 2822072, 3527590, 5644144, 7055180, 14110360, 28220720]

約数ペア:

[(1, 28220720), (2, 14110360), (4, 7055180), (5, 5644144), (8, 3527590), (10, 2822072), (11, 2565520), (16, 1763795), (20, 1411036), (22, 1282760), (40, 705518), (44, 641380), (55, 513104), (80, 352759), (88, 320690), (110, 256552), (176, 160345), (220, 128276), (440, 64138), (880, 32069)]