18681975

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2129}}^1$

素因数の和:2161

約数の個数: 48

約数和(自身を含む): 36976800

約数和(自身を除く): 18294825

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 195, 225, 325, 351, 585, 675, 975, 1755, 2129, 2925, 6387, 8775, 10645, 19161, 27677, 31935, 53225, 57483, 83031, 95805, 138385, 159675, 249093, 287415, 415155, 479025, 691925, 747279, 1245465, 1437075, 2075775, 3736395, 6227325, 18681975]

約数ペア:

[(1, 18681975), (3, 6227325), (5, 3736395), (9, 2075775), (13, 1437075), (15, 1245465), (25, 747279), (27, 691925), (39, 479025), (45, 415155), (65, 287415), (75, 249093), (117, 159675), (135, 138385), (195, 95805), (225, 83031), (325, 57483), (351, 53225), (585, 31935), (675, 27677), (975, 19161), (1755, 10645), (2129, 8775), (2925, 6387)]