80838220

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 172999008

約数和(自身を除く): 92160788

約数列:

[1, 2, 4, 5, 10, 20, 137, 163, 181, 274, 326, 362, 548, 652, 685, 724, 815, 905, 1370, 1630, 1810, 2740, 3260, 3620, 22331, 24797, 29503, 44662, 49594, 59006, 89324, 99188, 111655, 118012, 123985, 147515, 223310, 247970, 295030, 446620, 495940, 590060, 4041911, 8083822, 16167644, 20209555, 40419110, 80838220]

約数ペア:

[(1, 80838220), (2, 40419110), (4, 20209555), (5, 16167644), (10, 8083822), (20, 4041911), (137, 590060), (163, 495940), (181, 446620), (274, 295030), (326, 247970), (362, 223310), (548, 147515), (652, 123985), (685, 118012), (724, 111655), (815, 99188), (905, 89324), (1370, 59006), (1630, 49594), (1810, 44662), (2740, 29503), (3260, 24797), (3620, 22331)]