20992860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16661}}^1$

素因数の和:16683

約数の個数: 72

約数和(自身を含む): 72779616

約数和(自身を除く): 51786756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16661, 33322, 49983, 66644, 83305, 99966, 116627, 149949, 166610, 199932, 233254, 249915, 299898, 333220, 349881, 466508, 499830, 583135, 599796, 699762, 749745, 999660, 1049643, 1166270, 1399524, 1499490, 1749405, 2099286, 2332540, 2998980, 3498810, 4198572, 5248215, 6997620, 10496430, 20992860]

約数ペア:

[(1, 20992860), (2, 10496430), (3, 6997620), (4, 5248215), (5, 4198572), (6, 3498810), (7, 2998980), (9, 2332540), (10, 2099286), (12, 1749405), (14, 1499490), (15, 1399524), (18, 1166270), (20, 1049643), (21, 999660), (28, 749745), (30, 699762), (35, 599796), (36, 583135), (42, 499830), (45, 466508), (60, 349881), (63, 333220), (70, 299898), (84, 249915), (90, 233254), (105, 199932), (126, 166610), (140, 149949), (180, 116627), (210, 99966), (252, 83305), (315, 66644), (420, 49983), (630, 33322), (1260, 16661)]