63998020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{661}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 138797568

約数和(自身を除く): 74799548

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 103, 188, 206, 235, 412, 470, 515, 661, 940, 1030, 1322, 2060, 2644, 3305, 4841, 6610, 9682, 13220, 19364, 24205, 31067, 48410, 62134, 68083, 96820, 124268, 136166, 155335, 272332, 310670, 340415, 621340, 680830, 1361660, 3199901, 6399802, 12799604, 15999505, 31999010, 63998020]

約数ペア:

[(1, 63998020), (2, 31999010), (4, 15999505), (5, 12799604), (10, 6399802), (20, 3199901), (47, 1361660), (94, 680830), (103, 621340), (188, 340415), (206, 310670), (235, 272332), (412, 155335), (470, 136166), (515, 124268), (661, 96820), (940, 68083), (1030, 62134), (1322, 48410), (2060, 31067), (2644, 24205), (3305, 19364), (4841, 13220), (6610, 9682)]