25789580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21139}}^1$

素因数の和:21209

約数の個数: 24

約数和(自身を含む): 55048560

約数和(自身を除く): 29258980

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 21139, 42278, 84556, 105695, 211390, 422780, 1289479, 2578958, 5157916, 6447395, 12894790, 25789580]

約数ペア:

[(1, 25789580), (2, 12894790), (4, 6447395), (5, 5157916), (10, 2578958), (20, 1289479), (61, 422780), (122, 211390), (244, 105695), (305, 84556), (610, 42278), (1220, 21139)]