21383620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{577}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 48066480

約数和(自身を除く): 26682860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 545, 577, 1090, 1154, 1853, 2180, 2308, 2885, 3706, 5770, 7412, 9265, 9809, 11540, 18530, 19618, 37060, 39236, 49045, 62893, 98090, 125786, 196180, 251572, 314465, 628930, 1069181, 1257860, 2138362, 4276724, 5345905, 10691810, 21383620]

約数ペア:

[(1, 21383620), (2, 10691810), (4, 5345905), (5, 4276724), (10, 2138362), (17, 1257860), (20, 1069181), (34, 628930), (68, 314465), (85, 251572), (109, 196180), (170, 125786), (218, 98090), (340, 62893), (436, 49045), (545, 39236), (577, 37060), (1090, 19618), (1154, 18530), (1853, 11540), (2180, 9809), (2308, 9265), (2885, 7412), (3706, 5770)]