20683220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 46448640

約数和(自身を除く): 25765420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 127, 170, 254, 340, 479, 508, 635, 958, 1270, 1916, 2159, 2395, 2540, 4318, 4790, 8143, 8636, 9580, 10795, 16286, 21590, 32572, 40715, 43180, 60833, 81430, 121666, 162860, 243332, 304165, 608330, 1034161, 1216660, 2068322, 4136644, 5170805, 10341610, 20683220]

約数ペア:

[(1, 20683220), (2, 10341610), (4, 5170805), (5, 4136644), (10, 2068322), (17, 1216660), (20, 1034161), (34, 608330), (68, 304165), (85, 243332), (127, 162860), (170, 121666), (254, 81430), (340, 60833), (479, 43180), (508, 40715), (635, 32572), (958, 21590), (1270, 16286), (1916, 10795), (2159, 9580), (2395, 8636), (2540, 8143), (4318, 4790)]