20487776

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1147

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 23380384

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 124, 152, 248, 304, 496, 589, 608, 992, 1087, 1178, 2174, 2356, 4348, 4712, 8696, 9424, 17392, 18848, 20653, 33697, 34784, 41306, 67394, 82612, 134788, 165224, 269576, 330448, 539152, 640243, 660896, 1078304, 1280486, 2560972, 5121944, 10243888, 20487776]

約数ペア:

[(1, 20487776), (2, 10243888), (4, 5121944), (8, 2560972), (16, 1280486), (19, 1078304), (31, 660896), (32, 640243), (38, 539152), (62, 330448), (76, 269576), (124, 165224), (152, 134788), (248, 82612), (304, 67394), (496, 41306), (589, 34784), (608, 33697), (992, 20653), (1087, 18848), (1178, 17392), (2174, 9424), (2356, 8696), (4348, 4712)]