78469720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280249}}^1$

素因数の和:280267

約数の個数: 32

約数和(自身を含む): 201780000

約数和(自身を除く): 123310280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280249, 560498, 1120996, 1401245, 1961743, 2241992, 2802490, 3923486, 5604980, 7846972, 9808715, 11209960, 15693944, 19617430, 39234860, 78469720]

約数ペア:

[(1, 78469720), (2, 39234860), (4, 19617430), (5, 15693944), (7, 11209960), (8, 9808715), (10, 7846972), (14, 5604980), (20, 3923486), (28, 2802490), (35, 2241992), (40, 1961743), (56, 1401245), (70, 1120996), (140, 560498), (280, 280249)]