28335825

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{1999}}^1$

素因数の和:2028

約数の個数: 60

約数和(自身を含む): 60016000

約数和(自身を除く): 31680175

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 315, 405, 525, 567, 675, 945, 1575, 1999, 2025, 2835, 4725, 5997, 9995, 13993, 14175, 17991, 29985, 41979, 49975, 53973, 69965, 89955, 125937, 149925, 161919, 209895, 269865, 349825, 377811, 449775, 629685, 809595, 1049475, 1133433, 1349325, 1889055, 3148425, 4047975, 5667165, 9445275, 28335825]

約数ペア:

[(1, 28335825), (3, 9445275), (5, 5667165), (7, 4047975), (9, 3148425), (15, 1889055), (21, 1349325), (25, 1133433), (27, 1049475), (35, 809595), (45, 629685), (63, 449775), (75, 377811), (81, 349825), (105, 269865), (135, 209895), (175, 161919), (189, 149925), (225, 125937), (315, 89955), (405, 69965), (525, 53973), (567, 49975), (675, 41979), (945, 29985), (1575, 17991), (1999, 14175), (2025, 13993), (2835, 9995), (4725, 5997)]