20666940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49207}}^1$

素因数の和:49226

約数の個数: 48

約数和(自身を含む): 66135552

約数和(自身を除く): 45468612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49207, 98414, 147621, 196828, 246035, 295242, 344449, 492070, 590484, 688898, 738105, 984140, 1033347, 1377796, 1476210, 1722245, 2066694, 2952420, 3444490, 4133388, 5166735, 6888980, 10333470, 20666940]

約数ペア:

[(1, 20666940), (2, 10333470), (3, 6888980), (4, 5166735), (5, 4133388), (6, 3444490), (7, 2952420), (10, 2066694), (12, 1722245), (14, 1476210), (15, 1377796), (20, 1033347), (21, 984140), (28, 738105), (30, 688898), (35, 590484), (42, 492070), (60, 344449), (70, 295242), (84, 246035), (105, 196828), (140, 147621), (210, 98414), (420, 49207)]