80807860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82457}}^1$

素因数の和:82480

約数の個数: 36

約数和(自身を含む): 197404452

約数和(自身を除く): 116596592

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82457, 164914, 329828, 412285, 577199, 824570, 1154398, 1649140, 2308796, 2885995, 4040393, 5771990, 8080786, 11543980, 16161572, 20201965, 40403930, 80807860]

約数ペア:

[(1, 80807860), (2, 40403930), (4, 20201965), (5, 16161572), (7, 11543980), (10, 8080786), (14, 5771990), (20, 4040393), (28, 2885995), (35, 2308796), (49, 1649140), (70, 1154398), (98, 824570), (140, 577199), (196, 412285), (245, 329828), (490, 164914), (980, 82457)]