18779320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1427}}^1$

素因数の和:1492

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 30572360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1427, 1645, 1880, 2632, 2854, 3290, 5708, 6580, 7135, 9989, 11416, 13160, 14270, 19978, 28540, 39956, 49945, 57080, 67069, 79912, 99890, 134138, 199780, 268276, 335345, 399560, 469483, 536552, 670690, 938966, 1341380, 1877932, 2347415, 2682760, 3755864, 4694830, 9389660, 18779320]

約数ペア:

[(1, 18779320), (2, 9389660), (4, 4694830), (5, 3755864), (7, 2682760), (8, 2347415), (10, 1877932), (14, 1341380), (20, 938966), (28, 670690), (35, 536552), (40, 469483), (47, 399560), (56, 335345), (70, 268276), (94, 199780), (140, 134138), (188, 99890), (235, 79912), (280, 67069), (329, 57080), (376, 49945), (470, 39956), (658, 28540), (940, 19978), (1316, 14270), (1427, 13160), (1645, 11416), (1880, 9989), (2632, 7135), (2854, 6580), (3290, 5708)]