153940040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{81883}}^1$

素因数の和:81941

約数の個数: 32

約数和(自身を含む): 353738880

約数和(自身を除く): 199798840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 81883, 163766, 327532, 409415, 655064, 818830, 1637660, 3275320, 3848501, 7697002, 15394004, 19242505, 30788008, 38485010, 76970020, 153940040]

約数ペア:

[(1, 153940040), (2, 76970020), (4, 38485010), (5, 30788008), (8, 19242505), (10, 15394004), (20, 7697002), (40, 3848501), (47, 3275320), (94, 1637660), (188, 818830), (235, 655064), (376, 409415), (470, 327532), (940, 163766), (1880, 81883)]