21670236

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{761}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 63239904

約数和(自身を除く): 41569668

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 113, 126, 226, 252, 339, 452, 678, 761, 791, 1017, 1356, 1522, 1582, 2034, 2283, 2373, 3044, 3164, 4068, 4566, 4746, 5327, 6849, 7119, 9132, 9492, 10654, 13698, 14238, 15981, 21308, 27396, 28476, 31962, 47943, 63924, 85993, 95886, 171986, 191772, 257979, 343972, 515958, 601951, 773937, 1031916, 1203902, 1547874, 1805853, 2407804, 3095748, 3611706, 5417559, 7223412, 10835118, 21670236]

約数ペア:

[(1, 21670236), (2, 10835118), (3, 7223412), (4, 5417559), (6, 3611706), (7, 3095748), (9, 2407804), (12, 1805853), (14, 1547874), (18, 1203902), (21, 1031916), (28, 773937), (36, 601951), (42, 515958), (63, 343972), (84, 257979), (113, 191772), (126, 171986), (226, 95886), (252, 85993), (339, 63924), (452, 47943), (678, 31962), (761, 28476), (791, 27396), (1017, 21308), (1356, 15981), (1522, 14238), (1582, 13698), (2034, 10654), (2283, 9492), (2373, 9132), (3044, 7119), (3164, 6849), (4068, 5327), (4566, 4746)]