405465939

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{311}}^1\times {\mathrm{443}}^1$

素因数の和:872

約数の個数: 32

約数和(自身を含む): 609523200

約数和(自身を除く): 204057261

約数列:

[1, 3, 9, 27, 109, 311, 327, 443, 933, 981, 1329, 2799, 2943, 3987, 8397, 11961, 33899, 48287, 101697, 137773, 144861, 305091, 413319, 434583, 915273, 1239957, 1303749, 3719871, 15017257, 45051771, 135155313, 405465939]

約数ペア:

[(1, 405465939), (3, 135155313), (9, 45051771), (27, 15017257), (109, 3719871), (311, 1303749), (327, 1239957), (443, 915273), (933, 434583), (981, 413319), (1329, 305091), (2799, 144861), (2943, 137773), (3987, 101697), (8397, 48287), (11961, 33899)]