20862988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1231}}^1$

素因数の和:1477

約数の個数: 24

約数和(自身を含む): 38635520

約数和(自身を除く): 17772532

約数列:

[1, 2, 4, 19, 38, 76, 223, 446, 892, 1231, 2462, 4237, 4924, 8474, 16948, 23389, 46778, 93556, 274513, 549026, 1098052, 5215747, 10431494, 20862988]

約数ペア:

[(1, 20862988), (2, 10431494), (4, 5215747), (19, 1098052), (38, 549026), (76, 274513), (223, 93556), (446, 46778), (892, 23389), (1231, 16948), (2462, 8474), (4237, 4924)]