20320780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1013}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 45995040

約数和(自身を除く): 25674260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 295, 340, 590, 1003, 1013, 1180, 2006, 2026, 4012, 4052, 5015, 5065, 10030, 10130, 17221, 20060, 20260, 34442, 59767, 68884, 86105, 119534, 172210, 239068, 298835, 344420, 597670, 1016039, 1195340, 2032078, 4064156, 5080195, 10160390, 20320780]

約数ペア:

[(1, 20320780), (2, 10160390), (4, 5080195), (5, 4064156), (10, 2032078), (17, 1195340), (20, 1016039), (34, 597670), (59, 344420), (68, 298835), (85, 239068), (118, 172210), (170, 119534), (236, 86105), (295, 68884), (340, 59767), (590, 34442), (1003, 20260), (1013, 20060), (1180, 17221), (2006, 10130), (2026, 10030), (4012, 5065), (4052, 5015)]