20798030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2663}}^1$

素因数の和:2752

約数の個数: 32

約数和(自身を含む): 41430528

約数和(自身を除く): 20632498

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2663, 3905, 5326, 7810, 13315, 26630, 29293, 58586, 146465, 189073, 292930, 378146, 945365, 1890730, 2079803, 4159606, 10399015, 20798030]

約数ペア:

[(1, 20798030), (2, 10399015), (5, 4159606), (10, 2079803), (11, 1890730), (22, 945365), (55, 378146), (71, 292930), (110, 189073), (142, 146465), (355, 58586), (710, 29293), (781, 26630), (1562, 13315), (2663, 7810), (3905, 5326)]