90089980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{433}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 193362624

約数和(自身を除く): 103272644

約数列:

[1, 2, 4, 5, 10, 20, 101, 103, 202, 206, 404, 412, 433, 505, 515, 866, 1010, 1030, 1732, 2020, 2060, 2165, 4330, 8660, 10403, 20806, 41612, 43733, 44599, 52015, 87466, 89198, 104030, 174932, 178396, 208060, 218665, 222995, 437330, 445990, 874660, 891980, 4504499, 9008998, 18017996, 22522495, 45044990, 90089980]

約数ペア:

[(1, 90089980), (2, 45044990), (4, 22522495), (5, 18017996), (10, 9008998), (20, 4504499), (101, 891980), (103, 874660), (202, 445990), (206, 437330), (404, 222995), (412, 218665), (433, 208060), (505, 178396), (515, 174932), (866, 104030), (1010, 89198), (1030, 87466), (1732, 52015), (2020, 44599), (2060, 43733), (2165, 41612), (4330, 20806), (8660, 10403)]