16997985

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 32175360

約数和(自身を除く): 15177375

約数列:

[1, 3, 5, 9, 15, 27, 37, 41, 45, 83, 111, 123, 135, 185, 205, 249, 333, 369, 415, 555, 615, 747, 999, 1107, 1245, 1517, 1665, 1845, 2241, 3071, 3403, 3735, 4551, 4995, 5535, 7585, 9213, 10209, 11205, 13653, 15355, 17015, 22755, 27639, 30627, 40959, 46065, 51045, 68265, 82917, 91881, 125911, 138195, 153135, 204795, 377733, 414585, 459405, 629555, 1133199, 1888665, 3399597, 5665995, 16997985]

約数ペア:

[(1, 16997985), (3, 5665995), (5, 3399597), (9, 1888665), (15, 1133199), (27, 629555), (37, 459405), (41, 414585), (45, 377733), (83, 204795), (111, 153135), (123, 138195), (135, 125911), (185, 91881), (205, 82917), (249, 68265), (333, 51045), (369, 46065), (415, 40959), (555, 30627), (615, 27639), (747, 22755), (999, 17015), (1107, 15355), (1245, 13653), (1517, 11205), (1665, 10209), (1845, 9213), (2241, 7585), (3071, 5535), (3403, 4995), (3735, 4551)]