18979415

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 29302560

約数和(自身を除く): 10323145

約数列:

[1, 5, 7, 13, 35, 49, 59, 65, 91, 101, 245, 295, 413, 455, 505, 637, 707, 767, 1313, 2065, 2891, 3185, 3535, 3835, 4949, 5369, 5959, 6565, 9191, 14455, 24745, 26845, 29795, 37583, 41713, 45955, 64337, 77467, 187915, 208565, 291991, 321685, 387335, 542269, 1459955, 2711345, 3795883, 18979415]

約数ペア:

[(1, 18979415), (5, 3795883), (7, 2711345), (13, 1459955), (35, 542269), (49, 387335), (59, 321685), (65, 291991), (91, 208565), (101, 187915), (245, 77467), (295, 64337), (413, 45955), (455, 41713), (505, 37583), (637, 29795), (707, 26845), (767, 24745), (1313, 14455), (2065, 9191), (2891, 6565), (3185, 5959), (3535, 5369), (3835, 4949)]