85439720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{68903}}^1$

素因数の和:68945

約数の個数: 32

約数和(自身を含む): 198443520

約数和(自身を除く): 113003800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 68903, 137806, 275612, 344515, 551224, 689030, 1378060, 2135993, 2756120, 4271986, 8543972, 10679965, 17087944, 21359930, 42719860, 85439720]

約数ペア:

[(1, 85439720), (2, 42719860), (4, 21359930), (5, 17087944), (8, 10679965), (10, 8543972), (20, 4271986), (31, 2756120), (40, 2135993), (62, 1378060), (124, 689030), (155, 551224), (248, 344515), (310, 275612), (620, 137806), (1240, 68903)]