19643745

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 35239680

約数和(自身を除く): 15595935

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 121, 137, 165, 237, 363, 395, 411, 605, 685, 869, 1185, 1507, 1815, 2055, 2607, 4345, 4521, 7535, 9559, 10823, 13035, 16577, 22605, 28677, 32469, 47795, 49731, 54115, 82885, 119053, 143385, 162345, 248655, 357159, 595265, 1309583, 1785795, 3928749, 6547915, 19643745]

約数ペア:

[(1, 19643745), (3, 6547915), (5, 3928749), (11, 1785795), (15, 1309583), (33, 595265), (55, 357159), (79, 248655), (121, 162345), (137, 143385), (165, 119053), (237, 82885), (363, 54115), (395, 49731), (411, 47795), (605, 32469), (685, 28677), (869, 22605), (1185, 16577), (1507, 13035), (1815, 10823), (2055, 9559), (2607, 7535), (4345, 4521)]