221736380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{2897}}^1$

素因数の和:3038

約数の個数: 48

約数和(自身を含む): 481995360

約数和(自身を除く): 260258980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 860, 890, 1780, 2897, 3827, 5794, 7654, 11588, 14485, 15308, 19135, 28970, 38270, 57940, 76540, 124571, 249142, 257833, 498284, 515666, 622855, 1031332, 1245710, 1289165, 2491420, 2578330, 5156660, 11086819, 22173638, 44347276, 55434095, 110868190, 221736380]

約数ペア:

[(1, 221736380), (2, 110868190), (4, 55434095), (5, 44347276), (10, 22173638), (20, 11086819), (43, 5156660), (86, 2578330), (89, 2491420), (172, 1289165), (178, 1245710), (215, 1031332), (356, 622855), (430, 515666), (445, 498284), (860, 257833), (890, 249142), (1780, 124571), (2897, 76540), (3827, 57940), (5794, 38270), (7654, 28970), (11588, 19135), (14485, 15308)]