20734420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5107}}^1$

素因数の和:5152

約数の個数: 48

約数和(自身を含む): 51488640

約数和(自身を除く): 30754220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5107, 10214, 20428, 25535, 35749, 51070, 71498, 102140, 142996, 148103, 178745, 296206, 357490, 592412, 714980, 740515, 1036721, 1481030, 2073442, 2962060, 4146884, 5183605, 10367210, 20734420]

約数ペア:

[(1, 20734420), (2, 10367210), (4, 5183605), (5, 4146884), (7, 2962060), (10, 2073442), (14, 1481030), (20, 1036721), (28, 740515), (29, 714980), (35, 592412), (58, 357490), (70, 296206), (116, 178745), (140, 148103), (145, 142996), (203, 102140), (290, 71498), (406, 51070), (580, 35749), (812, 25535), (1015, 20428), (2030, 10214), (4060, 5107)]