81923720

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{10723}}^1$

素因数の和:10925

約数の個数: 32

約数和(自身を含む): 185310720

約数和(自身を除く): 103387000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 10723, 21446, 42892, 53615, 85784, 107230, 214460, 428920, 2048093, 4096186, 8192372, 10240465, 16384744, 20480930, 40961860, 81923720]

約数ペア:

[(1, 81923720), (2, 40961860), (4, 20480930), (5, 16384744), (8, 10240465), (10, 8192372), (20, 4096186), (40, 2048093), (191, 428920), (382, 214460), (764, 107230), (955, 85784), (1528, 53615), (1910, 42892), (3820, 21446), (7640, 10723)]