25121140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1283}}^1$

素因数の和:1392

約数の個数: 48

約数和(自身を含む): 58242240

約数和(自身を除く): 33121100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1283, 1780, 1958, 2566, 3916, 4895, 5132, 6415, 9790, 12830, 14113, 19580, 25660, 28226, 56452, 70565, 114187, 141130, 228374, 282260, 456748, 570935, 1141870, 1256057, 2283740, 2512114, 5024228, 6280285, 12560570, 25121140]

約数ペア:

[(1, 25121140), (2, 12560570), (4, 6280285), (5, 5024228), (10, 2512114), (11, 2283740), (20, 1256057), (22, 1141870), (44, 570935), (55, 456748), (89, 282260), (110, 228374), (178, 141130), (220, 114187), (356, 70565), (445, 56452), (890, 28226), (979, 25660), (1283, 19580), (1780, 14113), (1958, 12830), (2566, 9790), (3916, 6415), (4895, 5132)]