19647140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{347}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 43848000

約数和(自身を除く): 24200860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 347, 380, 596, 694, 745, 1388, 1490, 1735, 2831, 2980, 3470, 5662, 6593, 6940, 11324, 13186, 14155, 26372, 28310, 32965, 51703, 56620, 65930, 103406, 131860, 206812, 258515, 517030, 982357, 1034060, 1964714, 3929428, 4911785, 9823570, 19647140]

約数ペア:

[(1, 19647140), (2, 9823570), (4, 4911785), (5, 3929428), (10, 1964714), (19, 1034060), (20, 982357), (38, 517030), (76, 258515), (95, 206812), (149, 131860), (190, 103406), (298, 65930), (347, 56620), (380, 51703), (596, 32965), (694, 28310), (745, 26372), (1388, 14155), (1490, 13186), (1735, 11324), (2831, 6940), (2980, 6593), (3470, 5662)]