21440402

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{61}}^2\times {\mathrm{67}}^1$

素因数の和:234

約数の個数: 24

約数和(自身を含む): 33956208

約数和(自身を除く): 12515806

約数列:

[1, 2, 43, 61, 67, 86, 122, 134, 2623, 2881, 3721, 4087, 5246, 5762, 7442, 8174, 160003, 175741, 249307, 320006, 351482, 498614, 10720201, 21440402]

約数ペア:

[(1, 21440402), (2, 10720201), (43, 498614), (61, 351482), (67, 320006), (86, 249307), (122, 175741), (134, 160003), (2623, 8174), (2881, 7442), (3721, 5762), (4087, 5246)]