21109340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1151}}^1$

素因数の和:1298

約数の個数: 48

約数和(自身を含む): 51093504

約数和(自身を除く): 29984164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1151, 1310, 1834, 2302, 2620, 3668, 4585, 4604, 5755, 8057, 9170, 11510, 16114, 18340, 23020, 32228, 40285, 80570, 150781, 161140, 301562, 603124, 753905, 1055467, 1507810, 2110934, 3015620, 4221868, 5277335, 10554670, 21109340]

約数ペア:

[(1, 21109340), (2, 10554670), (4, 5277335), (5, 4221868), (7, 3015620), (10, 2110934), (14, 1507810), (20, 1055467), (28, 753905), (35, 603124), (70, 301562), (131, 161140), (140, 150781), (262, 80570), (524, 40285), (655, 32228), (917, 23020), (1151, 18340), (1310, 16114), (1834, 11510), (2302, 9170), (2620, 8057), (3668, 5755), (4585, 4604)]