20689928

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6971}}^1$

素因数の和:7037

約数の個数: 32

約数和(自身を含む): 45178560

約数和(自身を除く): 24488632

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 106, 212, 371, 424, 742, 1484, 2968, 6971, 13942, 27884, 48797, 55768, 97594, 195188, 369463, 390376, 738926, 1477852, 2586241, 2955704, 5172482, 10344964, 20689928]

約数ペア:

[(1, 20689928), (2, 10344964), (4, 5172482), (7, 2955704), (8, 2586241), (14, 1477852), (28, 738926), (53, 390376), (56, 369463), (106, 195188), (212, 97594), (371, 55768), (424, 48797), (742, 27884), (1484, 13942), (2968, 6971)]