21402738

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1381}}^1$

素因数の和:1440

約数の個数: 64

約数和(自身を含む): 55722240

約数和(自身を除く): 34319502

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 41, 42, 54, 63, 82, 123, 126, 189, 246, 287, 369, 378, 574, 738, 861, 1107, 1381, 1722, 2214, 2583, 2762, 4143, 5166, 7749, 8286, 9667, 12429, 15498, 19334, 24858, 29001, 37287, 56621, 58002, 74574, 87003, 113242, 169863, 174006, 261009, 339726, 396347, 509589, 522018, 792694, 1019178, 1189041, 1528767, 2378082, 3057534, 3567123, 7134246, 10701369, 21402738]

約数ペア:

[(1, 21402738), (2, 10701369), (3, 7134246), (6, 3567123), (7, 3057534), (9, 2378082), (14, 1528767), (18, 1189041), (21, 1019178), (27, 792694), (41, 522018), (42, 509589), (54, 396347), (63, 339726), (82, 261009), (123, 174006), (126, 169863), (189, 113242), (246, 87003), (287, 74574), (369, 58002), (378, 56621), (574, 37287), (738, 29001), (861, 24858), (1107, 19334), (1381, 15498), (1722, 12429), (2214, 9667), (2583, 8286), (2762, 7749), (4143, 5166)]