18178425

素因数分解:

$3^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:260

約数の個数: 60

約数和(自身を含む): 34569216

約数和(自身を除く): 16390791

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 81, 135, 141, 191, 225, 235, 405, 423, 573, 675, 705, 955, 1175, 1269, 1719, 2025, 2115, 2865, 3525, 3807, 4775, 5157, 6345, 8595, 8977, 10575, 14325, 15471, 19035, 25785, 26931, 31725, 42975, 44885, 77355, 80793, 95175, 128925, 134655, 224425, 242379, 386775, 403965, 673275, 727137, 1211895, 2019825, 3635685, 6059475, 18178425]

約数ペア:

[(1, 18178425), (3, 6059475), (5, 3635685), (9, 2019825), (15, 1211895), (25, 727137), (27, 673275), (45, 403965), (47, 386775), (75, 242379), (81, 224425), (135, 134655), (141, 128925), (191, 95175), (225, 80793), (235, 77355), (405, 44885), (423, 42975), (573, 31725), (675, 26931), (705, 25785), (955, 19035), (1175, 15471), (1269, 14325), (1719, 10575), (2025, 8977), (2115, 8595), (2865, 6345), (3525, 5157), (3807, 4775)]