21506972

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{881}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 18500548

約数列:

[1, 2, 4, 17, 34, 68, 359, 718, 881, 1436, 1762, 3524, 6103, 12206, 14977, 24412, 29954, 59908, 316279, 632558, 1265116, 5376743, 10753486, 21506972]

約数ペア:

[(1, 21506972), (2, 10753486), (4, 5376743), (17, 1265116), (34, 632558), (68, 316279), (359, 59908), (718, 29954), (881, 24412), (1436, 14977), (1762, 12206), (3524, 6103)]