21674575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3923}}^1$

素因数の和:3963

約数の個数: 24

約数和(自身を含む): 30654288

約数和(自身を除く): 8979713

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3923, 5525, 19615, 50999, 66691, 98075, 254995, 333455, 866983, 1274975, 1667275, 4334915, 21674575]

約数ペア:

[(1, 21674575), (5, 4334915), (13, 1667275), (17, 1274975), (25, 866983), (65, 333455), (85, 254995), (221, 98075), (325, 66691), (425, 50999), (1105, 19615), (3923, 5525)]