78855420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187751}}^1$

素因数の和:187770

約数の個数: 48

約数和(自身を含む): 252338688

約数和(自身を除く): 173483268

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, 187751, 375502, 563253, 751004, 938755, 1126506, 1314257, 1877510, 2253012, 2628514, 2816265, 3755020, 3942771, 5257028, 5632530, 6571285, 7885542, 11265060, 13142570, 15771084, 19713855, 26285140, 39427710, 78855420]

約数ペア:

[(1, 78855420), (2, 39427710), (3, 26285140), (4, 19713855), (5, 15771084), (6, 13142570), (7, 11265060), (10, 7885542), (12, 6571285), (14, 5632530), (15, 5257028), (20, 3942771), (21, 3755020), (28, 2816265), (30, 2628514), (35, 2253012), (42, 1877510), (60, 1314257), (70, 1126506), (84, 938755), (105, 751004), (140, 563253), (210, 375502), (420, 187751)]