21493945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4391}}^1$

素因数の和:4496

約数の個数: 16

約数和(自身を含む): 28460160

約数和(自身を除く): 6966215

約数列:

[1, 5, 11, 55, 89, 445, 979, 4391, 4895, 21955, 48301, 241505, 390799, 1953995, 4298789, 21493945]

約数ペア:

[(1, 21493945), (5, 4298789), (11, 1953995), (55, 390799), (89, 241505), (445, 48301), (979, 21955), (4391, 4895)]