78309420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{186451}}^1$

素因数の和:186470

約数の個数: 48

約数和(自身を含む): 250591488

約数和(自身を除く): 172282068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 186451, 372902, 559353, 745804, 932255, 1118706, 1305157, 1864510, 2237412, 2610314, 2796765, 3729020, 3915471, 5220628, 5593530, 6525785, 7830942, 11187060, 13051570, 15661884, 19577355, 26103140, 39154710, 78309420]

約数ペア:

[(1, 78309420), (2, 39154710), (3, 26103140), (4, 19577355), (5, 15661884), (6, 13051570), (7, 11187060), (10, 7830942), (12, 6525785), (14, 5593530), (15, 5220628), (20, 3915471), (21, 3729020), (28, 2796765), (30, 2610314), (35, 2237412), (42, 1864510), (60, 1305157), (70, 1118706), (84, 932255), (105, 745804), (140, 559353), (210, 372902), (420, 186451)]