21167748

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4421}}^1$

素因数の和:4457

約数の個数: 72

約数和(自身を含む): 64384320

約数和(自身を除く): 43216572

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4421, 4788, 8842, 13263, 17684, 26526, 30947, 39789, 53052, 61894, 79578, 83999, 92841, 123788, 159156, 167998, 185682, 251997, 278523, 335996, 371364, 503994, 557046, 587993, 755991, 1007988, 1114092, 1175986, 1511982, 1763979, 2351972, 3023964, 3527958, 5291937, 7055916, 10583874, 21167748]

約数ペア:

[(1, 21167748), (2, 10583874), (3, 7055916), (4, 5291937), (6, 3527958), (7, 3023964), (9, 2351972), (12, 1763979), (14, 1511982), (18, 1175986), (19, 1114092), (21, 1007988), (28, 755991), (36, 587993), (38, 557046), (42, 503994), (57, 371364), (63, 335996), (76, 278523), (84, 251997), (114, 185682), (126, 167998), (133, 159156), (171, 123788), (228, 92841), (252, 83999), (266, 79578), (342, 61894), (399, 53052), (532, 39789), (684, 30947), (798, 26526), (1197, 17684), (1596, 13263), (2394, 8842), (4421, 4788)]