21379478

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{971}}^1$

素因数の和:1183

約数の個数: 16

約数和(自身を含む): 32717520

約数和(自身を除く): 11338042

約数列:

[1, 2, 101, 109, 202, 218, 971, 1942, 11009, 22018, 98071, 105839, 196142, 211678, 10689739, 21379478]

約数ペア:

[(1, 21379478), (2, 10689739), (101, 211678), (109, 196142), (202, 105839), (218, 98071), (971, 22018), (1942, 11009)]