19206380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 23903764

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 971, 989, 1942, 1978, 3884, 3956, 4855, 4945, 9710, 9890, 19420, 19780, 22333, 41753, 44666, 83506, 89332, 111665, 167012, 208765, 223330, 417530, 446660, 835060, 960319, 1920638, 3841276, 4801595, 9603190, 19206380]

約数ペア:

[(1, 19206380), (2, 9603190), (4, 4801595), (5, 3841276), (10, 1920638), (20, 960319), (23, 835060), (43, 446660), (46, 417530), (86, 223330), (92, 208765), (115, 167012), (172, 111665), (215, 89332), (230, 83506), (430, 44666), (460, 41753), (860, 22333), (971, 19780), (989, 19420), (1942, 9890), (1978, 9710), (3884, 4945), (3956, 4855)]