21688336

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13421}}^1$

素因数の和:13530

約数の個数: 20

約数和(自身を含む): 42440364

約数和(自身を除く): 20752028

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13421, 26842, 53684, 107368, 214736, 1355521, 2711042, 5422084, 10844168, 21688336]

約数ペア:

[(1, 21688336), (2, 10844168), (4, 5422084), (8, 2711042), (16, 1355521), (101, 214736), (202, 107368), (404, 53684), (808, 26842), (1616, 13421)]