81105860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2131}}^1$

素因数の和:2324

約数の個数: 48

約数和(自身を含む): 186967872

約数和(自身を除く): 105862012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 173, 220, 346, 692, 865, 1730, 1903, 2131, 3460, 3806, 4262, 7612, 8524, 9515, 10655, 19030, 21310, 23441, 38060, 42620, 46882, 93764, 117205, 234410, 368663, 468820, 737326, 1474652, 1843315, 3686630, 4055293, 7373260, 8110586, 16221172, 20276465, 40552930, 81105860]

約数ペア:

[(1, 81105860), (2, 40552930), (4, 20276465), (5, 16221172), (10, 8110586), (11, 7373260), (20, 4055293), (22, 3686630), (44, 1843315), (55, 1474652), (110, 737326), (173, 468820), (220, 368663), (346, 234410), (692, 117205), (865, 93764), (1730, 46882), (1903, 42620), (2131, 38060), (3460, 23441), (3806, 21310), (4262, 19030), (7612, 10655), (8524, 9515)]