17906980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9839}}^1$

素因数の和:9868

約数の個数: 48

約数和(自身を含む): 46287360

約数和(自身を除く): 28380380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 9839, 19678, 39356, 49195, 68873, 98390, 127907, 137746, 196780, 255814, 275492, 344365, 511628, 639535, 688730, 895349, 1279070, 1377460, 1790698, 2558140, 3581396, 4476745, 8953490, 17906980]

約数ペア:

[(1, 17906980), (2, 8953490), (4, 4476745), (5, 3581396), (7, 2558140), (10, 1790698), (13, 1377460), (14, 1279070), (20, 895349), (26, 688730), (28, 639535), (35, 511628), (52, 344365), (65, 275492), (70, 255814), (91, 196780), (130, 137746), (140, 127907), (182, 98390), (260, 68873), (364, 49195), (455, 39356), (910, 19678), (1820, 9839)]