21390558

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2347}}^1$

素因数の和:2397

約数の個数: 48

約数和(自身を含む): 51393024

約数和(自身を除く): 30002466

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 49, 62, 93, 98, 147, 186, 217, 294, 434, 651, 1302, 1519, 2347, 3038, 4557, 4694, 7041, 9114, 14082, 16429, 32858, 49287, 72757, 98574, 115003, 145514, 218271, 230006, 345009, 436542, 509299, 690018, 1018598, 1527897, 3055794, 3565093, 7130186, 10695279, 21390558]

約数ペア:

[(1, 21390558), (2, 10695279), (3, 7130186), (6, 3565093), (7, 3055794), (14, 1527897), (21, 1018598), (31, 690018), (42, 509299), (49, 436542), (62, 345009), (93, 230006), (98, 218271), (147, 145514), (186, 115003), (217, 98574), (294, 72757), (434, 49287), (651, 32858), (1302, 16429), (1519, 14082), (2347, 9114), (3038, 7041), (4557, 4694)]