25238620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1289}}^1$

素因数の和:1398

約数の個数: 48

約数和(自身を含む): 58514400

約数和(自身を除く): 33275780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1289, 1780, 1958, 2578, 3916, 4895, 5156, 6445, 9790, 12890, 14179, 19580, 25780, 28358, 56716, 70895, 114721, 141790, 229442, 283580, 458884, 573605, 1147210, 1261931, 2294420, 2523862, 5047724, 6309655, 12619310, 25238620]

約数ペア:

[(1, 25238620), (2, 12619310), (4, 6309655), (5, 5047724), (10, 2523862), (11, 2294420), (20, 1261931), (22, 1147210), (44, 573605), (55, 458884), (89, 283580), (110, 229442), (178, 141790), (220, 114721), (356, 70895), (445, 56716), (890, 28358), (979, 25780), (1289, 19580), (1780, 14179), (1958, 12890), (2578, 9790), (3916, 6445), (4895, 5156)]