21184955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16747}}^1$

素因数の和:16786

約数の個数: 16

約数和(自身を含む): 28940544

約数和(自身を除く): 7755589

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16747, 83735, 184217, 385181, 921085, 1925905, 4236991, 21184955]

約数ペア:

[(1, 21184955), (5, 4236991), (11, 1925905), (23, 921085), (55, 385181), (115, 184217), (253, 83735), (1265, 16747)]