20121802575

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{1987}}^1\times {\mathrm{19289}}^1$

素因数の和:21296

約数の個数: 48

約数和(自身を含む): 38041731840

約数和(自身を除く): 17919929265

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 1987, 5961, 9935, 13909, 19289, 29805, 41727, 49675, 57867, 69545, 96445, 135023, 149025, 208635, 289335, 347725, 405069, 482225, 675115, 1043175, 1446675, 2025345, 3375575, 10126725, 38327243, 114981729, 191636215, 268290701, 574908645, 804872103, 958181075, 1341453505, 2874543225, 4024360515, 6707267525, 20121802575]

約数ペア:

[(1, 20121802575), (3, 6707267525), (5, 4024360515), (7, 2874543225), (15, 1341453505), (21, 958181075), (25, 804872103), (35, 574908645), (75, 268290701), (105, 191636215), (175, 114981729), (525, 38327243), (1987, 10126725), (5961, 3375575), (9935, 2025345), (13909, 1446675), (19289, 1043175), (29805, 675115), (41727, 482225), (49675, 405069), (57867, 347725), (69545, 289335), (96445, 208635), (135023, 149025)]