20575425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{449}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16922175

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 449, 611, 705, 975, 1175, 1347, 1833, 2245, 3055, 3525, 5837, 6735, 9165, 11225, 15275, 17511, 21103, 29185, 33675, 45825, 63309, 87555, 105515, 145925, 274339, 316545, 437775, 527575, 823017, 1371695, 1582725, 4115085, 6858475, 20575425]

約数ペア:

[(1, 20575425), (3, 6858475), (5, 4115085), (13, 1582725), (15, 1371695), (25, 823017), (39, 527575), (47, 437775), (65, 316545), (75, 274339), (141, 145925), (195, 105515), (235, 87555), (325, 63309), (449, 45825), (611, 33675), (705, 29185), (975, 21103), (1175, 17511), (1347, 15275), (1833, 11225), (2245, 9165), (3055, 6735), (3525, 5837)]