25138940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 55339200

約数和(自身を除く): 30200260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 445, 487, 580, 890, 974, 1780, 1948, 2435, 2581, 4870, 5162, 9740, 10324, 12905, 14123, 25810, 28246, 43343, 51620, 56492, 70615, 86686, 141230, 173372, 216715, 282460, 433430, 866860, 1256947, 2513894, 5027788, 6284735, 12569470, 25138940]

約数ペア:

[(1, 25138940), (2, 12569470), (4, 6284735), (5, 5027788), (10, 2513894), (20, 1256947), (29, 866860), (58, 433430), (89, 282460), (116, 216715), (145, 173372), (178, 141230), (290, 86686), (356, 70615), (445, 56492), (487, 51620), (580, 43343), (890, 28246), (974, 25810), (1780, 14123), (1948, 12905), (2435, 10324), (2581, 9740), (4870, 5162)]