21167358025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{98809}}^1$

素因数の和:98890

約数の個数: 48

約数和(自身を含む): 30876148800

約数和(自身を除く): 9708790775

約数列:

[1, 5, 11, 19, 25, 41, 55, 95, 205, 209, 275, 451, 475, 779, 1025, 1045, 2255, 3895, 5225, 8569, 11275, 19475, 42845, 98809, 214225, 494045, 1086899, 1877371, 2470225, 4051169, 5434495, 9386855, 20255845, 20651081, 27172475, 44562859, 46934275, 76972211, 101279225, 103255405, 222814295, 384861055, 516277025, 846694321, 1114071475, 1924305275, 4233471605, 21167358025]

約数ペア:

[(1, 21167358025), (5, 4233471605), (11, 1924305275), (19, 1114071475), (25, 846694321), (41, 516277025), (55, 384861055), (95, 222814295), (205, 103255405), (209, 101279225), (275, 76972211), (451, 46934275), (475, 44562859), (779, 27172475), (1025, 20651081), (1045, 20255845), (2255, 9386855), (3895, 5434495), (5225, 4051169), (8569, 2470225), (11275, 1877371), (19475, 1086899), (42845, 494045), (98809, 214225)]