77881547540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2208779}}^1$

素因数の和:2208872

約数の個数: 48

約数和(自身を含む): 171436668480

約数和(自身を除く): 93555120940

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 820, 860, 1763, 3526, 7052, 8815, 17630, 35260, 2208779, 4417558, 8835116, 11043895, 22087790, 44175580, 90559939, 94977497, 181119878, 189954994, 362239756, 379909988, 452799695, 474887485, 905599390, 949774970, 1811198780, 1899549940, 3894077377, 7788154754, 15576309508, 19470386885, 38940773770, 77881547540]

約数ペア:

[(1, 77881547540), (2, 38940773770), (4, 19470386885), (5, 15576309508), (10, 7788154754), (20, 3894077377), (41, 1899549940), (43, 1811198780), (82, 949774970), (86, 905599390), (164, 474887485), (172, 452799695), (205, 379909988), (215, 362239756), (410, 189954994), (430, 181119878), (820, 94977497), (860, 90559939), (1763, 44175580), (3526, 22087790), (7052, 11043895), (8815, 8835116), (17630, 4417558), (35260, 2208779)]