80915960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49339}}^1$

素因数の和:49391

約数の個数: 32

約数和(自身を含む): 186505200

約数和(自身を除く): 105589240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49339, 98678, 197356, 246695, 394712, 493390, 986780, 1973560, 2022899, 4045798, 8091596, 10114495, 16183192, 20228990, 40457980, 80915960]

約数ペア:

[(1, 80915960), (2, 40457980), (4, 20228990), (5, 16183192), (8, 10114495), (10, 8091596), (20, 4045798), (40, 2022899), (41, 1973560), (82, 986780), (164, 493390), (205, 394712), (328, 246695), (410, 197356), (820, 98678), (1640, 49339)]