20861890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:451

約数の個数: 64

約数和(自身を含む): 46531584

約数和(自身を除く): 25669694

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 47, 70, 85, 94, 119, 170, 235, 238, 329, 373, 470, 595, 658, 746, 799, 1190, 1598, 1645, 1865, 2611, 3290, 3730, 3995, 5222, 5593, 6341, 7990, 11186, 12682, 13055, 17531, 26110, 27965, 31705, 35062, 44387, 55930, 63410, 87655, 88774, 122717, 175310, 221935, 245434, 298027, 443870, 596054, 613585, 1227170, 1490135, 2086189, 2980270, 4172378, 10430945, 20861890]

約数ペア:

[(1, 20861890), (2, 10430945), (5, 4172378), (7, 2980270), (10, 2086189), (14, 1490135), (17, 1227170), (34, 613585), (35, 596054), (47, 443870), (70, 298027), (85, 245434), (94, 221935), (119, 175310), (170, 122717), (235, 88774), (238, 87655), (329, 63410), (373, 55930), (470, 44387), (595, 35062), (658, 31705), (746, 27965), (799, 26110), (1190, 17531), (1598, 13055), (1645, 12682), (1865, 11186), (2611, 7990), (3290, 6341), (3730, 5593), (3995, 5222)]