80872540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11789}}^1$

素因数の和:11819

約数の個数: 48

約数和(自身を含む): 198072000

約数和(自身を除く): 117199460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 11789, 23578, 47156, 58945, 82523, 117890, 165046, 235780, 330092, 412615, 577661, 825230, 1155322, 1650460, 2310644, 2888305, 4043627, 5776610, 8087254, 11553220, 16174508, 20218135, 40436270, 80872540]

約数ペア:

[(1, 80872540), (2, 40436270), (4, 20218135), (5, 16174508), (7, 11553220), (10, 8087254), (14, 5776610), (20, 4043627), (28, 2888305), (35, 2310644), (49, 1650460), (70, 1155322), (98, 825230), (140, 577661), (196, 412615), (245, 330092), (343, 235780), (490, 165046), (686, 117890), (980, 82523), (1372, 58945), (1715, 47156), (3430, 23578), (6860, 11789)]