19874790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16987}}^1$

素因数の和:17013

約数の個数: 48

約数和(自身を含む): 55652688

約数和(自身を除く): 35777898

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 16987, 33974, 50961, 84935, 101922, 152883, 169870, 220831, 254805, 305766, 441662, 509610, 662493, 764415, 1104155, 1324986, 1528830, 1987479, 2208310, 3312465, 3974958, 6624930, 9937395, 19874790]

約数ペア:

[(1, 19874790), (2, 9937395), (3, 6624930), (5, 3974958), (6, 3312465), (9, 2208310), (10, 1987479), (13, 1528830), (15, 1324986), (18, 1104155), (26, 764415), (30, 662493), (39, 509610), (45, 441662), (65, 305766), (78, 254805), (90, 220831), (117, 169870), (130, 152883), (195, 101922), (234, 84935), (390, 50961), (585, 33974), (1170, 16987)]