28420395

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{28279}}^1$

素因数の和:28354

約数の個数: 16

約数和(自身を含む): 46152960

約数和(自身を除く): 17732565

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 28279, 84837, 141395, 424185, 1894693, 5684079, 9473465, 28420395]

約数ペア:

[(1, 28420395), (3, 9473465), (5, 5684079), (15, 1894693), (67, 424185), (201, 141395), (335, 84837), (1005, 28279)]