21490024

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{349}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20089976

約数列:

[1, 2, 4, 8, 43, 86, 172, 179, 344, 349, 358, 698, 716, 1396, 1432, 2792, 7697, 15007, 15394, 30014, 30788, 60028, 61576, 62471, 120056, 124942, 249884, 499768, 2686253, 5372506, 10745012, 21490024]

約数ペア:

[(1, 21490024), (2, 10745012), (4, 5372506), (8, 2686253), (43, 499768), (86, 249884), (172, 124942), (179, 120056), (344, 62471), (349, 61576), (358, 60028), (698, 30788), (716, 30014), (1396, 15394), (1432, 15007), (2792, 7697)]