20881516

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{3847}}^1$

素因数の和:3933

約数の個数: 24

約数和(自身を含む): 38787840

約数和(自身を除く): 17906324

約数列:

[1, 2, 4, 23, 46, 59, 92, 118, 236, 1357, 2714, 3847, 5428, 7694, 15388, 88481, 176962, 226973, 353924, 453946, 907892, 5220379, 10440758, 20881516]

約数ペア:

[(1, 20881516), (2, 10440758), (4, 5220379), (23, 907892), (46, 453946), (59, 353924), (92, 226973), (118, 176962), (236, 88481), (1357, 15388), (2714, 7694), (3847, 5428)]