85217960

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4339}}^1$

素因数の和:4841

約数の個数: 32

約数和(自身を含む): 192175200

約数和(自身を除く): 106957240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4339, 4910, 8678, 9820, 17356, 19640, 21695, 34712, 43390, 86780, 173560, 2130449, 4260898, 8521796, 10652245, 17043592, 21304490, 42608980, 85217960]

約数ペア:

[(1, 85217960), (2, 42608980), (4, 21304490), (5, 17043592), (8, 10652245), (10, 8521796), (20, 4260898), (40, 2130449), (491, 173560), (982, 86780), (1964, 43390), (2455, 34712), (3928, 21695), (4339, 19640), (4910, 17356), (8678, 9820)]