8821340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 20460384

約数和(自身を除く): 11639044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 397, 404, 505, 794, 1010, 1111, 1588, 1985, 2020, 2222, 3970, 4367, 4444, 5555, 7940, 8734, 11110, 17468, 21835, 22220, 40097, 43670, 80194, 87340, 160388, 200485, 400970, 441067, 801940, 882134, 1764268, 2205335, 4410670, 8821340]

約数ペア:

[(1, 8821340), (2, 4410670), (4, 2205335), (5, 1764268), (10, 882134), (11, 801940), (20, 441067), (22, 400970), (44, 200485), (55, 160388), (101, 87340), (110, 80194), (202, 43670), (220, 40097), (397, 22220), (404, 21835), (505, 17468), (794, 11110), (1010, 8734), (1111, 7940), (1588, 5555), (1985, 4444), (2020, 4367), (2222, 3970)]