21164890

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:526

約数の個数: 32

約数和(自身を含む): 39214080

約数和(自身を除く): 18049190

約数列:

[1, 2, 5, 10, 73, 79, 146, 158, 365, 367, 395, 730, 734, 790, 1835, 3670, 5767, 11534, 26791, 28835, 28993, 53582, 57670, 57986, 133955, 144965, 267910, 289930, 2116489, 4232978, 10582445, 21164890]

約数ペア:

[(1, 21164890), (2, 10582445), (5, 4232978), (10, 2116489), (73, 289930), (79, 267910), (146, 144965), (158, 133955), (365, 57986), (367, 57670), (395, 53582), (730, 28993), (734, 28835), (790, 26791), (1835, 11534), (3670, 5767)]