21040847

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 23116800

約数和(自身を除く): 2075953

約数列:

[1, 19, 31, 139, 257, 589, 2641, 4309, 4883, 7967, 35723, 81871, 151373, 678737, 1107413, 21040847]

約数ペア:

[(1, 21040847), (19, 1107413), (31, 678737), (139, 151373), (257, 81871), (589, 35723), (2641, 7967), (4309, 4883)]