17918180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{977}}^1$

素因数の和:1124

約数の個数: 48

約数和(自身を含む): 43376256

約数和(自身を除く): 25458076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 977, 1310, 1834, 1954, 2620, 3668, 3908, 4585, 4885, 6839, 9170, 9770, 13678, 18340, 19540, 27356, 34195, 68390, 127987, 136780, 255974, 511948, 639935, 895909, 1279870, 1791818, 2559740, 3583636, 4479545, 8959090, 17918180]

約数ペア:

[(1, 17918180), (2, 8959090), (4, 4479545), (5, 3583636), (7, 2559740), (10, 1791818), (14, 1279870), (20, 895909), (28, 639935), (35, 511948), (70, 255974), (131, 136780), (140, 127987), (262, 68390), (524, 34195), (655, 27356), (917, 19540), (977, 18340), (1310, 13678), (1834, 9770), (1954, 9170), (2620, 6839), (3668, 4885), (3908, 4585)]