21049899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 32600064

約数和(自身を除く): 11550165

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 299, 403, 713, 757, 897, 1209, 2139, 2271, 9269, 9841, 17411, 23467, 27807, 29523, 52233, 70401, 226343, 305071, 539741, 679029, 915213, 1619223, 7016633, 21049899]

約数ペア:

[(1, 21049899), (3, 7016633), (13, 1619223), (23, 915213), (31, 679029), (39, 539741), (69, 305071), (93, 226343), (299, 70401), (403, 52233), (713, 29523), (757, 27807), (897, 23467), (1209, 17411), (2139, 9841), (2271, 9269)]