18843475

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 28569600

約数和(自身を除く): 9726125

約数列:

[1, 5, 7, 25, 29, 35, 47, 79, 145, 175, 203, 235, 329, 395, 553, 725, 1015, 1175, 1363, 1645, 1975, 2291, 2765, 3713, 5075, 6815, 8225, 9541, 11455, 13825, 16037, 18565, 25991, 34075, 47705, 57275, 80185, 92825, 107677, 129955, 238525, 400925, 538385, 649775, 753739, 2691925, 3768695, 18843475]

約数ペア:

[(1, 18843475), (5, 3768695), (7, 2691925), (25, 753739), (29, 649775), (35, 538385), (47, 400925), (79, 238525), (145, 129955), (175, 107677), (203, 92825), (235, 80185), (329, 57275), (395, 47705), (553, 34075), (725, 25991), (1015, 18565), (1175, 16037), (1363, 13825), (1645, 11455), (1975, 9541), (2291, 8225), (2765, 6815), (3713, 5075)]