21316975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 27891072

約数和(自身を除く): 6574097

約数列:

[1, 5, 23, 25, 115, 131, 283, 575, 655, 1415, 3013, 3275, 6509, 7075, 15065, 32545, 37073, 75325, 162725, 185365, 852679, 926825, 4263395, 21316975]

約数ペア:

[(1, 21316975), (5, 4263395), (23, 926825), (25, 852679), (115, 185365), (131, 162725), (283, 75325), (575, 37073), (655, 32545), (1415, 15065), (3013, 7075), (3275, 6509)]