21787670

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2203}}^1$

素因数の和:2276

約数の個数: 32

約数和(自身を含む): 41893632

約数和(自身を除く): 20105962

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2203, 4406, 4945, 9890, 11015, 22030, 50669, 94729, 101338, 189458, 253345, 473645, 506690, 947290, 2178767, 4357534, 10893835, 21787670]

約数ペア:

[(1, 21787670), (2, 10893835), (5, 4357534), (10, 2178767), (23, 947290), (43, 506690), (46, 473645), (86, 253345), (115, 189458), (215, 101338), (230, 94729), (430, 50669), (989, 22030), (1978, 11015), (2203, 9890), (4406, 4945)]