20179981840

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{389}}^1\times {\mathrm{2341}}^1$

素因数の和:3020

約数の個数: 80

約数和(自身を含む): 47229053040

約数和(自身を除く): 27049071200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 389, 554, 778, 1108, 1385, 1556, 1945, 2216, 2341, 2770, 3112, 3890, 4432, 4682, 5540, 6224, 7780, 9364, 11080, 11705, 15560, 18728, 22160, 23410, 31120, 37456, 46820, 93640, 107753, 187280, 215506, 431012, 538765, 648457, 862024, 910649, 1077530, 1296914, 1724048, 1821298, 2155060, 2593828, 3242285, 3642596, 4310120, 4553245, 5187656, 6484570, 7285192, 8620240, 9106490, 10375312, 12969140, 14570384, 18212980, 25938280, 36425960, 51876560, 72851920, 252249773, 504499546, 1008999092, 1261248865, 2017998184, 2522497730, 4035996368, 5044995460, 10089990920, 20179981840]

約数ペア:

[(1, 20179981840), (2, 10089990920), (4, 5044995460), (5, 4035996368), (8, 2522497730), (10, 2017998184), (16, 1261248865), (20, 1008999092), (40, 504499546), (80, 252249773), (277, 72851920), (389, 51876560), (554, 36425960), (778, 25938280), (1108, 18212980), (1385, 14570384), (1556, 12969140), (1945, 10375312), (2216, 9106490), (2341, 8620240), (2770, 7285192), (3112, 6484570), (3890, 5187656), (4432, 4553245), (4682, 4310120), (5540, 3642596), (6224, 3242285), (7780, 2593828), (9364, 2155060), (11080, 1821298), (11705, 1724048), (15560, 1296914), (18728, 1077530), (22160, 910649), (23410, 862024), (31120, 648457), (37456, 538765), (46820, 431012), (93640, 215506), (107753, 187280)]