20156883280

素因数分解:

$2^4\times 5^1\times {\mathrm{419}}^1\times {\mathrm{601339}}^1$

素因数の和:601771

約数の個数: 40

約数和(自身を含む): 46976680800

約数和(自身を除く): 26819797520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 838, 1676, 2095, 3352, 4190, 6704, 8380, 16760, 33520, 601339, 1202678, 2405356, 3006695, 4810712, 6013390, 9621424, 12026780, 24053560, 48107120, 251961041, 503922082, 1007844164, 1259805205, 2015688328, 2519610410, 4031376656, 5039220820, 10078441640, 20156883280]

約数ペア:

[(1, 20156883280), (2, 10078441640), (4, 5039220820), (5, 4031376656), (8, 2519610410), (10, 2015688328), (16, 1259805205), (20, 1007844164), (40, 503922082), (80, 251961041), (419, 48107120), (838, 24053560), (1676, 12026780), (2095, 9621424), (3352, 6013390), (4190, 4810712), (6704, 3006695), (8380, 2405356), (16760, 1202678), (33520, 601339)]