28404189

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{449}}^1$

素因数の和:543

約数の個数: 40

約数和(自身を含む): 47044800

約数和(自身を除く): 18640611

約数列:

[1, 3, 9, 11, 27, 33, 71, 81, 99, 213, 297, 449, 639, 781, 891, 1347, 1917, 2343, 4041, 4939, 5751, 7029, 12123, 14817, 21087, 31879, 36369, 44451, 63261, 95637, 133353, 286911, 350669, 400059, 860733, 1052007, 2582199, 3156021, 9468063, 28404189]

約数ペア:

[(1, 28404189), (3, 9468063), (9, 3156021), (11, 2582199), (27, 1052007), (33, 860733), (71, 400059), (81, 350669), (99, 286911), (213, 133353), (297, 95637), (449, 63261), (639, 44451), (781, 36369), (891, 31879), (1347, 21087), (1917, 14817), (2343, 12123), (4041, 7029), (4939, 5751)]