19198640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5581}}^1$

素因数の和:5637

約数の個数: 40

約数和(自身を含む): 45683088

約数和(自身を除く): 26484448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5581, 11162, 22324, 27905, 44648, 55810, 89296, 111620, 223240, 239983, 446480, 479966, 959932, 1199915, 1919864, 2399830, 3839728, 4799660, 9599320, 19198640]

約数ペア:

[(1, 19198640), (2, 9599320), (4, 4799660), (5, 3839728), (8, 2399830), (10, 1919864), (16, 1199915), (20, 959932), (40, 479966), (43, 446480), (80, 239983), (86, 223240), (172, 111620), (215, 89296), (344, 55810), (430, 44648), (688, 27905), (860, 22324), (1720, 11162), (3440, 5581)]