19511271

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 32672640

約数和(自身を除く): 13161369

約数列:

[1, 3, 9, 13, 19, 39, 57, 67, 117, 131, 171, 201, 247, 393, 603, 741, 871, 1179, 1273, 1703, 2223, 2489, 2613, 3819, 5109, 7467, 7839, 8777, 11457, 15327, 16549, 22401, 26331, 32357, 49647, 78993, 97071, 114101, 148941, 166763, 291213, 342303, 500289, 1026909, 1500867, 2167919, 6503757, 19511271]

約数ペア:

[(1, 19511271), (3, 6503757), (9, 2167919), (13, 1500867), (19, 1026909), (39, 500289), (57, 342303), (67, 291213), (117, 166763), (131, 148941), (171, 114101), (201, 97071), (247, 78993), (393, 49647), (603, 32357), (741, 26331), (871, 22401), (1179, 16549), (1273, 15327), (1703, 11457), (2223, 8777), (2489, 7839), (2613, 7467), (3819, 5109)]