21507124

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{659}}^1$

素因数の和:903

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 17300876

約数列:

[1, 2, 4, 41, 82, 164, 199, 398, 659, 796, 1318, 2636, 8159, 16318, 27019, 32636, 54038, 108076, 131141, 262282, 524564, 5376781, 10753562, 21507124]

約数ペア:

[(1, 21507124), (2, 10753562), (4, 5376781), (41, 524564), (82, 262282), (164, 131141), (199, 108076), (398, 54038), (659, 32636), (796, 27019), (1318, 16318), (2636, 8159)]