21139706

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{727}}^1$

素因数の和:834

約数の個数: 32

約数和(自身を含む): 38019072

約数和(自身を除く): 16879366

約数列:

[1, 2, 7, 14, 31, 62, 67, 134, 217, 434, 469, 727, 938, 1454, 2077, 4154, 5089, 10178, 14539, 22537, 29078, 45074, 48709, 97418, 157759, 315518, 340963, 681926, 1509979, 3019958, 10569853, 21139706]

約数ペア:

[(1, 21139706), (2, 10569853), (7, 3019958), (14, 1509979), (31, 681926), (62, 340963), (67, 315518), (134, 157759), (217, 97418), (434, 48709), (469, 45074), (727, 29078), (938, 22537), (1454, 14539), (2077, 10178), (4154, 5089)]