81489390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{87623}}^1$

素因数の和:87664

約数の個数: 32

約数和(自身を含む): 201885696

約数和(自身を除く): 120396306

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930, 87623, 175246, 262869, 438115, 525738, 876230, 1314345, 2628690, 2716313, 5432626, 8148939, 13581565, 16297878, 27163130, 40744695, 81489390]

約数ペア:

[(1, 81489390), (2, 40744695), (3, 27163130), (5, 16297878), (6, 13581565), (10, 8148939), (15, 5432626), (30, 2716313), (31, 2628690), (62, 1314345), (93, 876230), (155, 525738), (186, 438115), (310, 262869), (465, 175246), (930, 87623)]