261974180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{32503}}^1$

素因数の和:32556

約数の個数: 48

約数和(自身を含む): 611595264

約数和(自身を除く): 349621084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 32503, 65006, 130012, 162515, 325030, 422539, 650060, 845078, 1007593, 1690156, 2015186, 2112695, 4030372, 4225390, 5037965, 8450780, 10075930, 13098709, 20151860, 26197418, 52394836, 65493545, 130987090, 261974180]

約数ペア:

[(1, 261974180), (2, 130987090), (4, 65493545), (5, 52394836), (10, 26197418), (13, 20151860), (20, 13098709), (26, 10075930), (31, 8450780), (52, 5037965), (62, 4225390), (65, 4030372), (124, 2112695), (130, 2015186), (155, 1690156), (260, 1007593), (310, 845078), (403, 650060), (620, 422539), (806, 325030), (1612, 162515), (2015, 130012), (4030, 65006), (8060, 32503)]