129291080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{821}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 303022080

約数和(自身を除く): 173731000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 248, 254, 310, 508, 620, 635, 821, 1016, 1240, 1270, 1642, 2540, 3284, 3937, 4105, 5080, 6568, 7874, 8210, 15748, 16420, 19685, 25451, 31496, 32840, 39370, 50902, 78740, 101804, 104267, 127255, 157480, 203608, 208534, 254510, 417068, 509020, 521335, 834136, 1018040, 1042670, 2085340, 3232277, 4170680, 6464554, 12929108, 16161385, 25858216, 32322770, 64645540, 129291080]

約数ペア:

[(1, 129291080), (2, 64645540), (4, 32322770), (5, 25858216), (8, 16161385), (10, 12929108), (20, 6464554), (31, 4170680), (40, 3232277), (62, 2085340), (124, 1042670), (127, 1018040), (155, 834136), (248, 521335), (254, 509020), (310, 417068), (508, 254510), (620, 208534), (635, 203608), (821, 157480), (1016, 127255), (1240, 104267), (1270, 101804), (1642, 78740), (2540, 50902), (3284, 39370), (3937, 32840), (4105, 31496), (5080, 25451), (6568, 19685), (7874, 16420), (8210, 15748)]