80493380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4111}}^1$

素因数の和:4220

約数の個数: 48

約数和(自身を含む): 186520320

約数和(自身を除く): 106026940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4111, 4895, 8222, 9790, 16444, 19580, 20555, 41110, 45221, 82220, 90442, 180884, 226105, 365879, 452210, 731758, 904420, 1463516, 1829395, 3658790, 4024669, 7317580, 8049338, 16098676, 20123345, 40246690, 80493380]

約数ペア:

[(1, 80493380), (2, 40246690), (4, 20123345), (5, 16098676), (10, 8049338), (11, 7317580), (20, 4024669), (22, 3658790), (44, 1829395), (55, 1463516), (89, 904420), (110, 731758), (178, 452210), (220, 365879), (356, 226105), (445, 180884), (890, 90442), (979, 82220), (1780, 45221), (1958, 41110), (3916, 20555), (4111, 19580), (4895, 16444), (8222, 9790)]