78939420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187951}}^1$

素因数の和:187970

約数の個数: 48

約数和(自身を含む): 252607488

約数和(自身を除く): 173668068

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, 187951, 375902, 563853, 751804, 939755, 1127706, 1315657, 1879510, 2255412, 2631314, 2819265, 3759020, 3946971, 5262628, 5638530, 6578285, 7893942, 11277060, 13156570, 15787884, 19734855, 26313140, 39469710, 78939420]

約数ペア:

[(1, 78939420), (2, 39469710), (3, 26313140), (4, 19734855), (5, 15787884), (6, 13156570), (7, 11277060), (10, 7893942), (12, 6578285), (14, 5638530), (15, 5262628), (20, 3946971), (21, 3759020), (28, 2819265), (30, 2631314), (35, 2255412), (42, 1879510), (60, 1315657), (70, 1127706), (84, 939755), (105, 751804), (140, 563853), (210, 375902), (420, 187951)]