21787664

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25693}}^1$

素因数の和:25754

約数の個数: 20

約数和(自身を含む): 43011756

約数和(自身を除く): 21224092

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25693, 51386, 102772, 205544, 411088, 1361729, 2723458, 5446916, 10893832, 21787664]

約数ペア:

[(1, 21787664), (2, 10893832), (4, 5446916), (8, 2723458), (16, 1361729), (53, 411088), (106, 205544), (212, 102772), (424, 51386), (848, 25693)]