19899099

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 33696000

約数和(自身を除く): 13796901

約数列:

[1, 3, 9, 11, 19, 33, 57, 71, 99, 149, 171, 209, 213, 447, 627, 639, 781, 1341, 1349, 1639, 1881, 2343, 2831, 4047, 4917, 7029, 8493, 10579, 12141, 14751, 14839, 25479, 31141, 31737, 44517, 93423, 95211, 116369, 133551, 201001, 280269, 349107, 603003, 1047321, 1809009, 2211011, 6633033, 19899099]

約数ペア:

[(1, 19899099), (3, 6633033), (9, 2211011), (11, 1809009), (19, 1047321), (33, 603003), (57, 349107), (71, 280269), (99, 201001), (149, 133551), (171, 116369), (209, 95211), (213, 93423), (447, 44517), (627, 31737), (639, 31141), (781, 25479), (1341, 14839), (1349, 14751), (1639, 12141), (1881, 10579), (2343, 8493), (2831, 7029), (4047, 4917)]