28122160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31957}}^1$

素因数の和:31981

約数の個数: 40

約数和(自身を含む): 71330256

約数和(自身を除く): 43208096

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 31957, 63914, 127828, 159785, 255656, 319570, 351527, 511312, 639140, 703054, 1278280, 1406108, 1757635, 2556560, 2812216, 3515270, 5624432, 7030540, 14061080, 28122160]

約数ペア:

[(1, 28122160), (2, 14061080), (4, 7030540), (5, 5624432), (8, 3515270), (10, 2812216), (11, 2556560), (16, 1757635), (20, 1406108), (22, 1278280), (40, 703054), (44, 639140), (55, 511312), (80, 351527), (88, 319570), (110, 255656), (176, 159785), (220, 127828), (440, 63914), (880, 31957)]