20128515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2837}}^1$

素因数の和:2899

約数の個数: 32

約数和(自身を含む): 35963136

約数和(自身を除く): 15834621

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 2837, 7095, 8511, 14185, 31207, 42555, 93621, 121991, 156035, 365973, 468105, 609955, 1341901, 1829865, 4025703, 6709505, 20128515]

約数ペア:

[(1, 20128515), (3, 6709505), (5, 4025703), (11, 1829865), (15, 1341901), (33, 609955), (43, 468105), (55, 365973), (129, 156035), (165, 121991), (215, 93621), (473, 42555), (645, 31207), (1419, 14185), (2365, 8511), (2837, 7095)]