78898040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2137}}^1$

素因数の和:2232

約数の個数: 64

約数和(自身を含む): 193959360

約数和(自身を除く): 115061320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 520, 568, 710, 923, 1420, 1846, 2137, 2840, 3692, 4274, 4615, 7384, 8548, 9230, 10685, 17096, 18460, 21370, 27781, 36920, 42740, 55562, 85480, 111124, 138905, 151727, 222248, 277810, 303454, 555620, 606908, 758635, 1111240, 1213816, 1517270, 1972451, 3034540, 3944902, 6069080, 7889804, 9862255, 15779608, 19724510, 39449020, 78898040]

約数ペア:

[(1, 78898040), (2, 39449020), (4, 19724510), (5, 15779608), (8, 9862255), (10, 7889804), (13, 6069080), (20, 3944902), (26, 3034540), (40, 1972451), (52, 1517270), (65, 1213816), (71, 1111240), (104, 758635), (130, 606908), (142, 555620), (260, 303454), (284, 277810), (355, 222248), (520, 151727), (568, 138905), (710, 111124), (923, 85480), (1420, 55562), (1846, 42740), (2137, 36920), (2840, 27781), (3692, 21370), (4274, 18460), (4615, 17096), (7384, 10685), (8548, 9230)]