21160640

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{743}}^1$

素因数の和:849

約数の個数: 56

約数和(自身を含む): 51023520

約数和(自身を除く): 29862880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 743, 890, 1424, 1486, 1780, 2848, 2972, 3560, 3715, 5696, 5944, 7120, 7430, 11888, 14240, 14860, 23776, 28480, 29720, 47552, 59440, 66127, 118880, 132254, 237760, 264508, 330635, 529016, 661270, 1058032, 1322540, 2116064, 2645080, 4232128, 5290160, 10580320, 21160640]

約数ペア:

[(1, 21160640), (2, 10580320), (4, 5290160), (5, 4232128), (8, 2645080), (10, 2116064), (16, 1322540), (20, 1058032), (32, 661270), (40, 529016), (64, 330635), (80, 264508), (89, 237760), (160, 132254), (178, 118880), (320, 66127), (356, 59440), (445, 47552), (712, 29720), (743, 28480), (890, 23776), (1424, 14860), (1486, 14240), (1780, 11888), (2848, 7430), (2972, 7120), (3560, 5944), (3715, 5696)]