21501776

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12329}}^1$

素因数の和:12446

約数の個数: 20

約数和(自身を含む): 42045300

約数和(自身を除く): 20543524

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12329, 24658, 49316, 98632, 197264, 1343861, 2687722, 5375444, 10750888, 21501776]

約数ペア:

[(1, 21501776), (2, 10750888), (4, 5375444), (8, 2687722), (16, 1343861), (109, 197264), (218, 98632), (436, 49316), (872, 24658), (1744, 12329)]