2178820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 5322240

約数和(自身を除く): 3143420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 197, 316, 394, 395, 553, 788, 790, 985, 1106, 1379, 1580, 1970, 2212, 2758, 2765, 3940, 5516, 5530, 6895, 11060, 13790, 15563, 27580, 31126, 62252, 77815, 108941, 155630, 217882, 311260, 435764, 544705, 1089410, 2178820]

約数ペア:

[(1, 2178820), (2, 1089410), (4, 544705), (5, 435764), (7, 311260), (10, 217882), (14, 155630), (20, 108941), (28, 77815), (35, 62252), (70, 31126), (79, 27580), (140, 15563), (158, 13790), (197, 11060), (316, 6895), (394, 5530), (395, 5516), (553, 3940), (788, 2765), (790, 2758), (985, 2212), (1106, 1970), (1379, 1580)]