641445950

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{1789}}^1$

素因数の和:1973

約数の個数: 48

約数和(自身を含む): 1222555680

約数和(自身を除く): 581109730

約数列:

[1, 2, 5, 10, 25, 50, 71, 101, 142, 202, 355, 505, 710, 1010, 1775, 1789, 2525, 3550, 3578, 5050, 7171, 8945, 14342, 17890, 35855, 44725, 71710, 89450, 127019, 179275, 180689, 254038, 358550, 361378, 635095, 903445, 1270190, 1806890, 3175475, 4517225, 6350950, 9034450, 12828919, 25657838, 64144595, 128289190, 320722975, 641445950]

約数ペア:

[(1, 641445950), (2, 320722975), (5, 128289190), (10, 64144595), (25, 25657838), (50, 12828919), (71, 9034450), (101, 6350950), (142, 4517225), (202, 3175475), (355, 1806890), (505, 1270190), (710, 903445), (1010, 635095), (1775, 361378), (1789, 358550), (2525, 254038), (3550, 180689), (3578, 179275), (5050, 127019), (7171, 89450), (8945, 71710), (14342, 44725), (17890, 35855)]