21328678

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{443}}^1$

素因数の和:652

約数の個数: 32

約数和(自身を含む): 38787840

約数和(自身を除く): 17459162

約数列:

[1, 2, 7, 14, 19, 38, 133, 181, 266, 362, 443, 886, 1267, 2534, 3101, 3439, 6202, 6878, 8417, 16834, 24073, 48146, 58919, 80183, 117838, 160366, 561281, 1122562, 1523477, 3046954, 10664339, 21328678]

約数ペア:

[(1, 21328678), (2, 10664339), (7, 3046954), (14, 1523477), (19, 1122562), (38, 561281), (133, 160366), (181, 117838), (266, 80183), (362, 58919), (443, 48146), (886, 24073), (1267, 16834), (2534, 8417), (3101, 6878), (3439, 6202)]