20797192

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 42194880

約数和(自身を除く): 21397688

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 311, 622, 643, 1244, 1286, 2488, 2572, 4043, 5144, 8086, 8359, 16172, 16718, 32344, 33436, 66872, 199973, 399946, 799892, 1599784, 2599649, 5199298, 10398596, 20797192]

約数ペア:

[(1, 20797192), (2, 10398596), (4, 5199298), (8, 2599649), (13, 1599784), (26, 799892), (52, 399946), (104, 199973), (311, 66872), (622, 33436), (643, 32344), (1244, 16718), (1286, 16172), (2488, 8359), (2572, 8086), (4043, 5144)]