19778224

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{12239}}^1$

素因数の和:12348

約数の個数: 20

約数和(自身を含む): 38702880

約数和(自身を除く): 18924656

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 12239, 24478, 48956, 97912, 195824, 1236139, 2472278, 4944556, 9889112, 19778224]

約数ペア:

[(1, 19778224), (2, 9889112), (4, 4944556), (8, 2472278), (16, 1236139), (101, 195824), (202, 97912), (404, 48956), (808, 24478), (1616, 12239)]