1820980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13007}}^1$

素因数の和:13023

約数の個数: 24

約数和(自身を含む): 4370688

約数和(自身を除く): 2549708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 13007, 26014, 52028, 65035, 91049, 130070, 182098, 260140, 364196, 455245, 910490, 1820980]

約数ペア:

[(1, 1820980), (2, 910490), (4, 455245), (5, 364196), (7, 260140), (10, 182098), (14, 130070), (20, 91049), (28, 65035), (35, 52028), (70, 26014), (140, 13007)]