21367520

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1609}}^1$

素因数の和:1707

約数の個数: 48

約数和(自身を含む): 51120720

約数和(自身を除く): 29753200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1609, 1660, 2656, 3218, 3320, 6436, 6640, 8045, 12872, 13280, 16090, 25744, 32180, 51488, 64360, 128720, 133547, 257440, 267094, 534188, 667735, 1068376, 1335470, 2136752, 2670940, 4273504, 5341880, 10683760, 21367520]

約数ペア:

[(1, 21367520), (2, 10683760), (4, 5341880), (5, 4273504), (8, 2670940), (10, 2136752), (16, 1335470), (20, 1068376), (32, 667735), (40, 534188), (80, 267094), (83, 257440), (160, 133547), (166, 128720), (332, 64360), (415, 51488), (664, 32180), (830, 25744), (1328, 16090), (1609, 13280), (1660, 12872), (2656, 8045), (3218, 6640), (3320, 6436)]