19784415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 39075840

約数和(自身を除く): 19291425

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 47, 57, 95, 105, 133, 141, 211, 235, 285, 329, 399, 633, 665, 705, 893, 987, 1055, 1477, 1645, 1995, 2679, 3165, 4009, 4431, 4465, 4935, 6251, 7385, 9917, 12027, 13395, 18753, 20045, 22155, 28063, 29751, 31255, 49585, 60135, 69419, 84189, 93765, 140315, 148755, 188423, 208257, 347095, 420945, 565269, 942115, 1041285, 1318961, 2826345, 3956883, 6594805, 19784415]

約数ペア:

[(1, 19784415), (3, 6594805), (5, 3956883), (7, 2826345), (15, 1318961), (19, 1041285), (21, 942115), (35, 565269), (47, 420945), (57, 347095), (95, 208257), (105, 188423), (133, 148755), (141, 140315), (211, 93765), (235, 84189), (285, 69419), (329, 60135), (399, 49585), (633, 31255), (665, 29751), (705, 28063), (893, 22155), (987, 20045), (1055, 18753), (1477, 13395), (1645, 12027), (1995, 9917), (2679, 7385), (3165, 6251), (4009, 4935), (4431, 4465)]