20788440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{907}}^1$

素因数の和:1112

約数の個数: 64

約数和(自身を含む): 62760960

約数和(自身を除く): 41972520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 191, 382, 573, 764, 907, 955, 1146, 1528, 1814, 1910, 2292, 2721, 2865, 3628, 3820, 4535, 4584, 5442, 5730, 7256, 7640, 9070, 10884, 11460, 13605, 18140, 21768, 22920, 27210, 36280, 54420, 108840, 173237, 346474, 519711, 692948, 866185, 1039422, 1385896, 1732370, 2078844, 2598555, 3464740, 4157688, 5197110, 6929480, 10394220, 20788440]

約数ペア:

[(1, 20788440), (2, 10394220), (3, 6929480), (4, 5197110), (5, 4157688), (6, 3464740), (8, 2598555), (10, 2078844), (12, 1732370), (15, 1385896), (20, 1039422), (24, 866185), (30, 692948), (40, 519711), (60, 346474), (120, 173237), (191, 108840), (382, 54420), (573, 36280), (764, 27210), (907, 22920), (955, 21768), (1146, 18140), (1528, 13605), (1814, 11460), (1910, 10884), (2292, 9070), (2721, 7640), (2865, 7256), (3628, 5730), (3820, 5442), (4535, 4584)]