25621820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{929}}^1$

素因数の和:1142

約数の個数: 48

約数和(自身を含む): 61871040

約数和(自身を除く): 36249220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 929, 985, 1379, 1858, 1970, 2758, 3716, 3940, 4645, 5516, 6503, 6895, 9290, 13006, 13790, 18580, 26012, 27580, 32515, 65030, 130060, 183013, 366026, 732052, 915065, 1281091, 1830130, 2562182, 3660260, 5124364, 6405455, 12810910, 25621820]

約数ペア:

[(1, 25621820), (2, 12810910), (4, 6405455), (5, 5124364), (7, 3660260), (10, 2562182), (14, 1830130), (20, 1281091), (28, 915065), (35, 732052), (70, 366026), (140, 183013), (197, 130060), (394, 65030), (788, 32515), (929, 27580), (985, 26012), (1379, 18580), (1858, 13790), (1970, 13006), (2758, 9290), (3716, 6895), (3940, 6503), (4645, 5516)]