19413640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11287}}^1$

素因数の和:11341

約数の個数: 32

約数和(自身を含む): 44700480

約数和(自身を除く): 25286840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11287, 22574, 45148, 56435, 90296, 112870, 225740, 451480, 485341, 970682, 1941364, 2426705, 3882728, 4853410, 9706820, 19413640]

約数ペア:

[(1, 19413640), (2, 9706820), (4, 4853410), (5, 3882728), (8, 2426705), (10, 1941364), (20, 970682), (40, 485341), (43, 451480), (86, 225740), (172, 112870), (215, 90296), (344, 56435), (430, 45148), (860, 22574), (1720, 11287)]