21237136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69859}}^1$

素因数の和:69886

約数の個数: 20

約数和(自身を含む): 43313200

約数和(自身を除く): 22076064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69859, 139718, 279436, 558872, 1117744, 1327321, 2654642, 5309284, 10618568, 21237136]

約数ペア:

[(1, 21237136), (2, 10618568), (4, 5309284), (8, 2654642), (16, 1327321), (19, 1117744), (38, 558872), (76, 279436), (152, 139718), (304, 69859)]