81494140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44777}}^1$

素因数の和:44806

約数の個数: 48

約数和(自身を含む): 210635712

約数和(自身を除く): 129141572

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 44777, 89554, 179108, 223885, 313439, 447770, 582101, 626878, 895540, 1164202, 1253756, 1567195, 2328404, 2910505, 3134390, 4074707, 5821010, 6268780, 8149414, 11642020, 16298828, 20373535, 40747070, 81494140]

約数ペア:

[(1, 81494140), (2, 40747070), (4, 20373535), (5, 16298828), (7, 11642020), (10, 8149414), (13, 6268780), (14, 5821010), (20, 4074707), (26, 3134390), (28, 2910505), (35, 2328404), (52, 1567195), (65, 1253756), (70, 1164202), (91, 895540), (130, 626878), (140, 582101), (182, 447770), (260, 313439), (364, 223885), (455, 179108), (910, 89554), (1820, 44777)]