21378654

素因数分解:

$2^1\times 3^6\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:105

約数の個数: 112

約数和(自身を含む): 55401984

約数和(自身を除く): 34023330

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 31, 33, 43, 54, 62, 66, 81, 86, 93, 99, 129, 162, 186, 198, 243, 258, 279, 297, 341, 387, 473, 486, 558, 594, 682, 729, 774, 837, 891, 946, 1023, 1161, 1333, 1419, 1458, 1674, 1782, 2046, 2322, 2511, 2666, 2673, 2838, 3069, 3483, 3999, 4257, 5022, 5346, 6138, 6966, 7533, 7998, 8019, 8514, 9207, 10449, 11997, 12771, 14663, 15066, 16038, 18414, 20898, 22599, 23994, 25542, 27621, 29326, 31347, 35991, 38313, 43989, 45198, 55242, 62694, 71982, 76626, 82863, 87978, 107973, 114939, 131967, 165726, 215946, 229878, 248589, 263934, 323919, 344817, 395901, 497178, 647838, 689634, 791802, 971757, 1187703, 1943514, 2375406, 3563109, 7126218, 10689327, 21378654]

約数ペア:

[(1, 21378654), (2, 10689327), (3, 7126218), (6, 3563109), (9, 2375406), (11, 1943514), (18, 1187703), (22, 971757), (27, 791802), (31, 689634), (33, 647838), (43, 497178), (54, 395901), (62, 344817), (66, 323919), (81, 263934), (86, 248589), (93, 229878), (99, 215946), (129, 165726), (162, 131967), (186, 114939), (198, 107973), (243, 87978), (258, 82863), (279, 76626), (297, 71982), (341, 62694), (387, 55242), (473, 45198), (486, 43989), (558, 38313), (594, 35991), (682, 31347), (729, 29326), (774, 27621), (837, 25542), (891, 23994), (946, 22599), (1023, 20898), (1161, 18414), (1333, 16038), (1419, 15066), (1458, 14663), (1674, 12771), (1782, 11997), (2046, 10449), (2322, 9207), (2511, 8514), (2666, 8019), (2673, 7998), (2838, 7533), (3069, 6966), (3483, 6138), (3999, 5346), (4257, 5022)]