71978913

素因数分解:

$3^2\times {\mathrm{109}}^1\times {\mathrm{239}}^1\times {\mathrm{307}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 105705600

約数和(自身を除く): 33726687

約数列:

[1, 3, 9, 109, 239, 307, 327, 717, 921, 981, 2151, 2763, 26051, 33463, 73373, 78153, 100389, 220119, 234459, 301167, 660357, 7997657, 23992971, 71978913]

約数ペア:

[(1, 71978913), (3, 23992971), (9, 7997657), (109, 660357), (239, 301167), (307, 234459), (327, 220119), (717, 100389), (921, 78153), (981, 73373), (2151, 33463), (2763, 26051)]