2808978820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{25031}}^1$

素因数の和:25252

約数の個数: 48

約数和(自身を含む): 6123027456

約数和(自身を除く): 3314048636

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 181, 310, 362, 620, 724, 905, 1810, 3620, 5611, 11222, 22444, 25031, 28055, 50062, 56110, 100124, 112220, 125155, 250310, 500620, 775961, 1551922, 3103844, 3879805, 4530611, 7759610, 9061222, 15519220, 18122444, 22653055, 45306110, 90612220, 140448941, 280897882, 561795764, 702244705, 1404489410, 2808978820]

約数ペア:

[(1, 2808978820), (2, 1404489410), (4, 702244705), (5, 561795764), (10, 280897882), (20, 140448941), (31, 90612220), (62, 45306110), (124, 22653055), (155, 18122444), (181, 15519220), (310, 9061222), (362, 7759610), (620, 4530611), (724, 3879805), (905, 3103844), (1810, 1551922), (3620, 775961), (5611, 500620), (11222, 250310), (22444, 125155), (25031, 112220), (28055, 100124), (50062, 56110)]