19787235

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 17371677

約数列:

[1, 3, 5, 13, 15, 17, 39, 47, 51, 65, 85, 127, 141, 195, 221, 235, 255, 381, 611, 635, 663, 705, 799, 1105, 1651, 1833, 1905, 2159, 2397, 3055, 3315, 3995, 4953, 5969, 6477, 8255, 9165, 10387, 10795, 11985, 17907, 24765, 28067, 29845, 31161, 32385, 51935, 77597, 84201, 89535, 101473, 140335, 155805, 232791, 304419, 387985, 421005, 507365, 1163955, 1319149, 1522095, 3957447, 6595745, 19787235]

約数ペア:

[(1, 19787235), (3, 6595745), (5, 3957447), (13, 1522095), (15, 1319149), (17, 1163955), (39, 507365), (47, 421005), (51, 387985), (65, 304419), (85, 232791), (127, 155805), (141, 140335), (195, 101473), (221, 89535), (235, 84201), (255, 77597), (381, 51935), (611, 32385), (635, 31161), (663, 29845), (705, 28067), (799, 24765), (1105, 17907), (1651, 11985), (1833, 10795), (1905, 10387), (2159, 9165), (2397, 8255), (3055, 6477), (3315, 5969), (3995, 4953)]