19896639

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{883}}^1$

素因数の和:959

約数の個数: 32

約数和(自身を含む): 32248320

約数和(自身を除く): 12351681

約数列:

[1, 3, 7, 21, 29, 37, 87, 111, 203, 259, 609, 777, 883, 1073, 2649, 3219, 6181, 7511, 18543, 22533, 25607, 32671, 76821, 98013, 179249, 228697, 537747, 686091, 947459, 2842377, 6632213, 19896639]

約数ペア:

[(1, 19896639), (3, 6632213), (7, 2842377), (21, 947459), (29, 686091), (37, 537747), (87, 228697), (111, 179249), (203, 98013), (259, 76821), (609, 32671), (777, 25607), (883, 22533), (1073, 18543), (2649, 7511), (3219, 6181)]