213565720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{130223}}^1$

素因数の和:130275

約数の個数: 32

約数和(自身を含む): 492246720

約数和(自身を除く): 278681000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 130223, 260446, 520892, 651115, 1041784, 1302230, 2604460, 5208920, 5339143, 10678286, 21356572, 26695715, 42713144, 53391430, 106782860, 213565720]

約数ペア:

[(1, 213565720), (2, 106782860), (4, 53391430), (5, 42713144), (8, 26695715), (10, 21356572), (20, 10678286), (40, 5339143), (41, 5208920), (82, 2604460), (164, 1302230), (205, 1041784), (328, 651115), (410, 520892), (820, 260446), (1640, 130223)]