19209825

素因数分解:

$3^3\times 5^2\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 35712000

約数和(自身を除く): 16502175

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 149, 191, 225, 447, 573, 675, 745, 955, 1341, 1719, 2235, 2865, 3725, 4023, 4775, 5157, 6705, 8595, 11175, 14325, 20115, 25785, 28459, 33525, 42975, 85377, 100575, 128925, 142295, 256131, 426885, 711475, 768393, 1280655, 2134425, 3841965, 6403275, 19209825]

約数ペア:

[(1, 19209825), (3, 6403275), (5, 3841965), (9, 2134425), (15, 1280655), (25, 768393), (27, 711475), (45, 426885), (75, 256131), (135, 142295), (149, 128925), (191, 100575), (225, 85377), (447, 42975), (573, 33525), (675, 28459), (745, 25785), (955, 20115), (1341, 14325), (1719, 11175), (2235, 8595), (2865, 6705), (3725, 5157), (4023, 4775)]