20155648

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1890

約数の個数: 36

約数和(自身を含む): 41190688

約数和(自身を除く): 21035040

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 688, 1376, 1831, 2752, 3662, 5504, 7324, 11008, 14648, 29296, 58592, 78733, 117184, 157466, 234368, 314932, 468736, 629864, 1259728, 2519456, 5038912, 10077824, 20155648]

約数ペア:

[(1, 20155648), (2, 10077824), (4, 5038912), (8, 2519456), (16, 1259728), (32, 629864), (43, 468736), (64, 314932), (86, 234368), (128, 157466), (172, 117184), (256, 78733), (344, 58592), (688, 29296), (1376, 14648), (1831, 11008), (2752, 7324), (3662, 5504)]