71947521

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:431

約数の個数: 40

約数和(自身を含む): 112602600

約数和(自身を除く): 40655079

約数列:

[1, 3, 9, 27, 29, 81, 87, 109, 261, 281, 327, 783, 843, 981, 2349, 2529, 2943, 3161, 7587, 8149, 8829, 9483, 22761, 24447, 28449, 30629, 73341, 85347, 91887, 220023, 256041, 275661, 660069, 826983, 888241, 2480949, 2664723, 7994169, 23982507, 71947521]

約数ペア:

[(1, 71947521), (3, 23982507), (9, 7994169), (27, 2664723), (29, 2480949), (81, 888241), (87, 826983), (109, 660069), (261, 275661), (281, 256041), (327, 220023), (783, 91887), (843, 85347), (981, 73341), (2349, 30629), (2529, 28449), (2943, 24447), (3161, 22761), (7587, 9483), (8149, 8829)]