21441910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43759}}^1$

素因数の和:43780

約数の個数: 24

約数和(自身を含む): 44897760

約数和(自身を除く): 23455850

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43759, 87518, 218795, 306313, 437590, 612626, 1531565, 2144191, 3063130, 4288382, 10720955, 21441910]

約数ペア:

[(1, 21441910), (2, 10720955), (5, 4288382), (7, 3063130), (10, 2144191), (14, 1531565), (35, 612626), (49, 437590), (70, 306313), (98, 218795), (245, 87518), (490, 43759)]