220880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1$

素因数の和:275

約数の個数: 40

約数和(自身を含む): 562464

約数和(自身を除く): 341584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 251, 440, 502, 880, 1004, 1255, 2008, 2510, 2761, 4016, 5020, 5522, 10040, 11044, 13805, 20080, 22088, 27610, 44176, 55220, 110440, 220880]

約数ペア:

[(1, 220880), (2, 110440), (4, 55220), (5, 44176), (8, 27610), (10, 22088), (11, 20080), (16, 13805), (20, 11044), (22, 10040), (40, 5522), (44, 5020), (55, 4016), (80, 2761), (88, 2510), (110, 2008), (176, 1255), (220, 1004), (251, 880), (440, 502)]