20987744

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{21157}}^1$

素因数の和:21198

約数の個数: 24

約数和(自身を含む): 42654528

約数和(自身を除く): 21666784

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992, 21157, 42314, 84628, 169256, 338512, 655867, 677024, 1311734, 2623468, 5246936, 10493872, 20987744]

約数ペア:

[(1, 20987744), (2, 10493872), (4, 5246936), (8, 2623468), (16, 1311734), (31, 677024), (32, 655867), (62, 338512), (124, 169256), (248, 84628), (496, 42314), (992, 21157)]