64697890

素因数分解:

$2^1\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{4021}}^1$

素因数の和:5637

約数の個数: 16

約数和(自身を含む): 116557560

約数和(自身を除く): 51859670

約数列:

[1, 2, 5, 10, 1609, 3218, 4021, 8042, 8045, 16090, 20105, 40210, 6469789, 12939578, 32348945, 64697890]

約数ペア:

[(1, 64697890), (2, 32348945), (5, 12939578), (10, 6469789), (1609, 40210), (3218, 20105), (4021, 16090), (8042, 8045)]