21509090

素因数分解:

$2^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{12433}}^1$

素因数の和:12613

約数の個数: 16

約数和(自身を含む): 38943288

約数和(自身を除く): 17434198

約数列:

[1, 2, 5, 10, 173, 346, 865, 1730, 12433, 24866, 62165, 124330, 2150909, 4301818, 10754545, 21509090]

約数ペア:

[(1, 21509090), (2, 10754545), (5, 4301818), (10, 2150909), (173, 124330), (346, 62165), (865, 24866), (1730, 12433)]