20253440

素因数分解:

$2^8\times 5^1\times {\mathrm{15823}}^1$

素因数の和:15844

約数の個数: 36

約数和(自身を含む): 48516384

約数和(自身を除く): 28262944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15823, 31646, 63292, 79115, 126584, 158230, 253168, 316460, 506336, 632920, 1012672, 1265840, 2025344, 2531680, 4050688, 5063360, 10126720, 20253440]

約数ペア:

[(1, 20253440), (2, 10126720), (4, 5063360), (5, 4050688), (8, 2531680), (10, 2025344), (16, 1265840), (20, 1012672), (32, 632920), (40, 506336), (64, 316460), (80, 253168), (128, 158230), (160, 126584), (256, 79115), (320, 63292), (640, 31646), (1280, 15823)]