1296406940

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1\times {\mathrm{1361}}^1$

素因数の和:1958

約数の個数: 48

約数和(自身を含む): 2758148064

約数和(自身を除く): 1461741124

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 491, 970, 982, 1361, 1940, 1964, 2455, 2722, 4910, 5444, 6805, 9820, 13610, 27220, 47627, 95254, 132017, 190508, 238135, 264034, 476270, 528068, 660085, 668251, 952540, 1320170, 1336502, 2640340, 2673004, 3341255, 6682510, 13365020, 64820347, 129640694, 259281388, 324101735, 648203470, 1296406940]

約数ペア:

[(1, 1296406940), (2, 648203470), (4, 324101735), (5, 259281388), (10, 129640694), (20, 64820347), (97, 13365020), (194, 6682510), (388, 3341255), (485, 2673004), (491, 2640340), (970, 1336502), (982, 1320170), (1361, 952540), (1940, 668251), (1964, 660085), (2455, 528068), (2722, 476270), (4910, 264034), (5444, 238135), (6805, 190508), (9820, 132017), (13610, 95254), (27220, 47627)]