16040420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72911}}^1$

素因数の和:72931

約数の個数: 24

約数和(自身を含む): 36747648

約数和(自身を除く): 20707228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 72911, 145822, 291644, 364555, 729110, 802021, 1458220, 1604042, 3208084, 4010105, 8020210, 16040420]

約数ペア:

[(1, 16040420), (2, 8020210), (4, 4010105), (5, 3208084), (10, 1604042), (11, 1458220), (20, 802021), (22, 729110), (44, 364555), (55, 291644), (110, 145822), (220, 72911)]