21381954

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 53049600

約数和(自身を除く): 31667646

約数列:

[1, 2, 3, 6, 11, 17, 19, 22, 33, 34, 38, 51, 57, 59, 66, 102, 114, 118, 177, 187, 209, 289, 323, 354, 374, 418, 561, 578, 627, 646, 649, 867, 969, 1003, 1121, 1122, 1254, 1298, 1734, 1938, 1947, 2006, 2242, 3009, 3179, 3363, 3553, 3894, 5491, 6018, 6358, 6726, 7106, 9537, 10659, 10982, 11033, 12331, 16473, 17051, 19057, 19074, 21318, 22066, 24662, 32946, 33099, 34102, 36993, 38114, 51153, 57171, 60401, 66198, 73986, 102306, 114342, 120802, 181203, 187561, 209627, 323969, 362406, 375122, 419254, 562683, 628881, 647938, 971907, 1125366, 1257762, 1943814, 3563659, 7127318, 10690977, 21381954]

約数ペア:

[(1, 21381954), (2, 10690977), (3, 7127318), (6, 3563659), (11, 1943814), (17, 1257762), (19, 1125366), (22, 971907), (33, 647938), (34, 628881), (38, 562683), (51, 419254), (57, 375122), (59, 362406), (66, 323969), (102, 209627), (114, 187561), (118, 181203), (177, 120802), (187, 114342), (209, 102306), (289, 73986), (323, 66198), (354, 60401), (374, 57171), (418, 51153), (561, 38114), (578, 36993), (627, 34102), (646, 33099), (649, 32946), (867, 24662), (969, 22066), (1003, 21318), (1121, 19074), (1122, 19057), (1254, 17051), (1298, 16473), (1734, 12331), (1938, 11033), (1947, 10982), (2006, 10659), (2242, 9537), (3009, 7106), (3179, 6726), (3363, 6358), (3553, 6018), (3894, 5491)]