2173395

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{2957}}^1$

素因数の和:2979

約数の個数: 24

約数和(自身を含む): 4046544

約数和(自身を除く): 1873149

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 2957, 8871, 14785, 20699, 44355, 62097, 103495, 144893, 310485, 434679, 724465, 2173395]

約数ペア:

[(1, 2173395), (3, 724465), (5, 434679), (7, 310485), (15, 144893), (21, 103495), (35, 62097), (49, 44355), (105, 20699), (147, 14785), (245, 8871), (735, 2957)]