25480700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:519

約数の個数: 72

約数和(自身を含む): 64058400

約数和(自身を除く): 38577700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 89, 100, 140, 175, 178, 350, 356, 409, 445, 623, 700, 818, 890, 1246, 1636, 1780, 2045, 2225, 2492, 2863, 3115, 4090, 4450, 5726, 6230, 8180, 8900, 10225, 11452, 12460, 14315, 15575, 20450, 28630, 31150, 36401, 40900, 57260, 62300, 71575, 72802, 143150, 145604, 182005, 254807, 286300, 364010, 509614, 728020, 910025, 1019228, 1274035, 1820050, 2548070, 3640100, 5096140, 6370175, 12740350, 25480700]

約数ペア:

[(1, 25480700), (2, 12740350), (4, 6370175), (5, 5096140), (7, 3640100), (10, 2548070), (14, 1820050), (20, 1274035), (25, 1019228), (28, 910025), (35, 728020), (50, 509614), (70, 364010), (89, 286300), (100, 254807), (140, 182005), (175, 145604), (178, 143150), (350, 72802), (356, 71575), (409, 62300), (445, 57260), (623, 40900), (700, 36401), (818, 31150), (890, 28630), (1246, 20450), (1636, 15575), (1780, 14315), (2045, 12460), (2225, 11452), (2492, 10225), (2863, 8900), (3115, 8180), (4090, 6230), (4450, 5726)]