71987272

素因数分解:

$2^3\times 7^2\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 157747500

約数和(自身を除く): 85760228

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 409, 449, 818, 898, 1636, 1796, 2863, 3143, 3272, 3592, 5726, 6286, 11452, 12572, 20041, 22001, 22904, 25144, 40082, 44002, 80164, 88004, 160328, 176008, 183641, 367282, 734564, 1285487, 1469128, 2570974, 5141948, 8998409, 10283896, 17996818, 35993636, 71987272]

約数ペア:

[(1, 71987272), (2, 35993636), (4, 17996818), (7, 10283896), (8, 8998409), (14, 5141948), (28, 2570974), (49, 1469128), (56, 1285487), (98, 734564), (196, 367282), (392, 183641), (409, 176008), (449, 160328), (818, 88004), (898, 80164), (1636, 44002), (1796, 40082), (2863, 25144), (3143, 22904), (3272, 22001), (3592, 20041), (5726, 12572), (6286, 11452)]