19879762120

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1\times {\mathrm{15227}}^1$

素因数の和:15622

約数の個数: 64

約数和(自身を含む): 45260052480

約数和(自身を除く): 25380290360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 257, 508, 514, 635, 1016, 1028, 1270, 1285, 2056, 2540, 2570, 5080, 5140, 10280, 15227, 30454, 32639, 60908, 65278, 76135, 121816, 130556, 152270, 163195, 261112, 304540, 326390, 609080, 652780, 1305560, 1933829, 3867658, 3913339, 7735316, 7826678, 9669145, 15470632, 15653356, 19338290, 19566695, 31306712, 38676580, 39133390, 77353160, 78266780, 156533560, 496994053, 993988106, 1987976212, 2484970265, 3975952424, 4969940530, 9939881060, 19879762120]

約数ペア:

[(1, 19879762120), (2, 9939881060), (4, 4969940530), (5, 3975952424), (8, 2484970265), (10, 1987976212), (20, 993988106), (40, 496994053), (127, 156533560), (254, 78266780), (257, 77353160), (508, 39133390), (514, 38676580), (635, 31306712), (1016, 19566695), (1028, 19338290), (1270, 15653356), (1285, 15470632), (2056, 9669145), (2540, 7826678), (2570, 7735316), (5080, 3913339), (5140, 3867658), (10280, 1933829), (15227, 1305560), (30454, 652780), (32639, 609080), (60908, 326390), (65278, 304540), (76135, 261112), (121816, 163195), (130556, 152270)]