21125895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1163}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 38886912

約数和(自身を除く): 17761017

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 173, 519, 865, 1163, 1211, 2595, 3489, 3633, 5815, 6055, 8141, 17445, 18165, 24423, 40705, 122115, 201199, 603597, 1005995, 1408393, 3017985, 4225179, 7041965, 21125895]

約数ペア:

[(1, 21125895), (3, 7041965), (5, 4225179), (7, 3017985), (15, 1408393), (21, 1005995), (35, 603597), (105, 201199), (173, 122115), (519, 40705), (865, 24423), (1163, 18165), (1211, 17445), (2595, 8141), (3489, 6055), (3633, 5815)]