21280756

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24517}}^1$

素因数の和:24559

約数の個数: 24

約数和(自身を含む): 43936256

約数和(自身を除く): 22655500

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 24517, 49034, 98068, 171619, 343238, 686476, 760027, 1520054, 3040108, 5320189, 10640378, 21280756]

約数ペア:

[(1, 21280756), (2, 10640378), (4, 5320189), (7, 3040108), (14, 1520054), (28, 760027), (31, 686476), (62, 343238), (124, 171619), (217, 98068), (434, 49034), (868, 24517)]