261738115

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 334098432

約数和(自身を除く): 72360317

約数列:

[1, 5, 31, 53, 151, 155, 211, 265, 755, 1055, 1643, 4681, 6541, 8003, 8215, 11183, 23405, 31861, 32705, 40015, 55915, 159305, 248093, 346673, 987691, 1240465, 1688633, 1733365, 4938455, 8443165, 52347623, 261738115]

約数ペア:

[(1, 261738115), (5, 52347623), (31, 8443165), (53, 4938455), (151, 1733365), (155, 1688633), (211, 1240465), (265, 987691), (755, 346673), (1055, 248093), (1643, 159305), (4681, 55915), (6541, 40015), (8003, 32705), (8215, 31861), (11183, 23405)]