25357840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1609}}^1$

素因数の和:1819

約数の個数: 40

約数和(自身を含む): 59293080

約数和(自身を除く): 33935240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1609, 1970, 3152, 3218, 3940, 6436, 7880, 8045, 12872, 15760, 16090, 25744, 32180, 64360, 128720, 316973, 633946, 1267892, 1584865, 2535784, 3169730, 5071568, 6339460, 12678920, 25357840]

約数ペア:

[(1, 25357840), (2, 12678920), (4, 6339460), (5, 5071568), (8, 3169730), (10, 2535784), (16, 1584865), (20, 1267892), (40, 633946), (80, 316973), (197, 128720), (394, 64360), (788, 32180), (985, 25744), (1576, 16090), (1609, 15760), (1970, 12872), (3152, 8045), (3218, 7880), (3940, 6436)]