21717475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3517}}^1$

素因数の和:3559

約数の個数: 24

約数和(自身を含む): 30536240

約数和(自身を除く): 8818765

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3517, 6175, 17585, 45721, 66823, 87925, 228605, 334115, 868699, 1143025, 1670575, 4343495, 21717475]

約数ペア:

[(1, 21717475), (5, 4343495), (13, 1670575), (19, 1143025), (25, 868699), (65, 334115), (95, 228605), (247, 87925), (325, 66823), (475, 45721), (1235, 17585), (3517, 6175)]