21771316

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7549}}^1$

素因数の和:7663

約数の個数: 24

約数和(自身を含む): 43971200

約数和(自身を除く): 22199884

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7549, 15098, 30196, 52843, 105686, 211372, 777547, 1555094, 3110188, 5442829, 10885658, 21771316]

約数ペア:

[(1, 21771316), (2, 10885658), (4, 5442829), (7, 3110188), (14, 1555094), (28, 777547), (103, 211372), (206, 105686), (412, 52843), (721, 30196), (1442, 15098), (2884, 7549)]