18947560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 45489600

約数和(自身を除く): 26542040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 233, 380, 428, 466, 535, 760, 856, 932, 1070, 1165, 1864, 2033, 2140, 2330, 4066, 4280, 4427, 4660, 8132, 8854, 9320, 10165, 16264, 17708, 20330, 22135, 24931, 35416, 40660, 44270, 49862, 81320, 88540, 99724, 124655, 177080, 199448, 249310, 473689, 498620, 947378, 997240, 1894756, 2368445, 3789512, 4736890, 9473780, 18947560]

約数ペア:

[(1, 18947560), (2, 9473780), (4, 4736890), (5, 3789512), (8, 2368445), (10, 1894756), (19, 997240), (20, 947378), (38, 498620), (40, 473689), (76, 249310), (95, 199448), (107, 177080), (152, 124655), (190, 99724), (214, 88540), (233, 81320), (380, 49862), (428, 44270), (466, 40660), (535, 35416), (760, 24931), (856, 22135), (932, 20330), (1070, 17708), (1165, 16264), (1864, 10165), (2033, 9320), (2140, 8854), (2330, 8132), (4066, 4660), (4280, 4427)]