21417256

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20129}}^1$

素因数の和:20161

約数の個数: 32

約数和(自身を含む): 48312000

約数和(自身を除く): 26894744

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20129, 40258, 80516, 140903, 161032, 281806, 382451, 563612, 764902, 1127224, 1529804, 2677157, 3059608, 5354314, 10708628, 21417256]

約数ペア:

[(1, 21417256), (2, 10708628), (4, 5354314), (7, 3059608), (8, 2677157), (14, 1529804), (19, 1127224), (28, 764902), (38, 563612), (56, 382451), (76, 281806), (133, 161032), (152, 140903), (266, 80516), (532, 40258), (1064, 20129)]