21399632

素因数分解:

$2^4\times {\mathrm{503}}^1\times {\mathrm{2659}}^1$

素因数の和:3170

約数の個数: 20

約数和(自身を含む): 41559840

約数和(自身を除く): 20160208

約数列:

[1, 2, 4, 8, 16, 503, 1006, 2012, 2659, 4024, 5318, 8048, 10636, 21272, 42544, 1337477, 2674954, 5349908, 10699816, 21399632]

約数ペア:

[(1, 21399632), (2, 10699816), (4, 5349908), (8, 2674954), (16, 1337477), (503, 42544), (1006, 21272), (2012, 10636), (2659, 8048), (4024, 5318)]