18991746

素因数分解:

$2^1\times 3^4\times {\mathrm{59}}^1\times {\mathrm{1987}}^1$

素因数の和:2060

約数の個数: 40

約数和(自身を含む): 43298640

約数和(自身を除く): 24306894

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 59, 81, 118, 162, 177, 354, 531, 1062, 1593, 1987, 3186, 3974, 4779, 5961, 9558, 11922, 17883, 35766, 53649, 107298, 117233, 160947, 234466, 321894, 351699, 703398, 1055097, 2110194, 3165291, 6330582, 9495873, 18991746]

約数ペア:

[(1, 18991746), (2, 9495873), (3, 6330582), (6, 3165291), (9, 2110194), (18, 1055097), (27, 703398), (54, 351699), (59, 321894), (81, 234466), (118, 160947), (162, 117233), (177, 107298), (354, 53649), (531, 35766), (1062, 17883), (1593, 11922), (1987, 9558), (3186, 5961), (3974, 4779)]