17904340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 39029760

約数和(自身を除く): 21125420

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 172, 191, 215, 218, 382, 430, 436, 545, 764, 860, 955, 1090, 1910, 2180, 3820, 4687, 8213, 9374, 16426, 18748, 20819, 23435, 32852, 41065, 41638, 46870, 82130, 83276, 93740, 104095, 164260, 208190, 416380, 895217, 1790434, 3580868, 4476085, 8952170, 17904340]

約数ペア:

[(1, 17904340), (2, 8952170), (4, 4476085), (5, 3580868), (10, 1790434), (20, 895217), (43, 416380), (86, 208190), (109, 164260), (172, 104095), (191, 93740), (215, 83276), (218, 82130), (382, 46870), (430, 41638), (436, 41065), (545, 32852), (764, 23435), (860, 20819), (955, 18748), (1090, 16426), (1910, 9374), (2180, 8213), (3820, 4687)]