20218758

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 64

約数和(自身を含む): 48771072

約数和(自身を除く): 28552314

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 53, 62, 93, 106, 159, 186, 217, 293, 318, 371, 434, 586, 651, 742, 879, 1113, 1302, 1643, 1758, 2051, 2226, 3286, 4102, 4929, 6153, 9083, 9858, 11501, 12306, 15529, 18166, 23002, 27249, 31058, 34503, 46587, 54498, 63581, 69006, 93174, 108703, 127162, 190743, 217406, 326109, 381486, 481399, 652218, 962798, 1444197, 2888394, 3369793, 6739586, 10109379, 20218758]

約数ペア:

[(1, 20218758), (2, 10109379), (3, 6739586), (6, 3369793), (7, 2888394), (14, 1444197), (21, 962798), (31, 652218), (42, 481399), (53, 381486), (62, 326109), (93, 217406), (106, 190743), (159, 127162), (186, 108703), (217, 93174), (293, 69006), (318, 63581), (371, 54498), (434, 46587), (586, 34503), (651, 31058), (742, 27249), (879, 23002), (1113, 18166), (1302, 15529), (1643, 12306), (1758, 11501), (2051, 9858), (2226, 9083), (3286, 6153), (4102, 4929)]