21289331812

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{138469}}^1$

素因数の和:138533

約数の個数: 72

約数和(自身を含む): 47611524800

約数和(自身を除く): 26322192988

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 68, 76, 119, 133, 238, 266, 289, 323, 476, 532, 578, 646, 1156, 1292, 2023, 2261, 4046, 4522, 5491, 8092, 9044, 10982, 21964, 38437, 76874, 138469, 153748, 276938, 553876, 969283, 1938566, 2353973, 2630911, 3877132, 4707946, 5261822, 9415892, 10523644, 16477811, 18416377, 32955622, 36832754, 40017541, 44725487, 65911244, 73665508, 80035082, 89450974, 160070164, 178901948, 280122787, 313078409, 560245574, 626156818, 760333279, 1120491148, 1252313636, 1520666558, 3041333116, 5322332953, 10644665906, 21289331812]

約数ペア:

[(1, 21289331812), (2, 10644665906), (4, 5322332953), (7, 3041333116), (14, 1520666558), (17, 1252313636), (19, 1120491148), (28, 760333279), (34, 626156818), (38, 560245574), (68, 313078409), (76, 280122787), (119, 178901948), (133, 160070164), (238, 89450974), (266, 80035082), (289, 73665508), (323, 65911244), (476, 44725487), (532, 40017541), (578, 36832754), (646, 32955622), (1156, 18416377), (1292, 16477811), (2023, 10523644), (2261, 9415892), (4046, 5261822), (4522, 4707946), (5491, 3877132), (8092, 2630911), (9044, 2353973), (10982, 1938566), (21964, 969283), (38437, 553876), (76874, 276938), (138469, 153748)]