21996884

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 49268520

約数和(自身を除く): 27271636

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 89, 91, 97, 98, 178, 182, 194, 196, 356, 364, 388, 623, 637, 679, 1157, 1246, 1261, 1274, 1358, 2314, 2492, 2522, 2548, 2716, 4361, 4628, 4753, 5044, 8099, 8633, 8722, 8827, 9506, 16198, 17266, 17444, 17654, 19012, 32396, 34532, 35308, 56693, 60431, 61789, 112229, 113386, 120862, 123578, 224458, 226772, 241724, 247156, 423017, 448916, 785603, 846034, 1571206, 1692068, 3142412, 5499221, 10998442, 21996884]

約数ペア:

[(1, 21996884), (2, 10998442), (4, 5499221), (7, 3142412), (13, 1692068), (14, 1571206), (26, 846034), (28, 785603), (49, 448916), (52, 423017), (89, 247156), (91, 241724), (97, 226772), (98, 224458), (178, 123578), (182, 120862), (194, 113386), (196, 112229), (356, 61789), (364, 60431), (388, 56693), (623, 35308), (637, 34532), (679, 32396), (1157, 19012), (1246, 17654), (1261, 17444), (1274, 17266), (1358, 16198), (2314, 9506), (2492, 8827), (2522, 8722), (2548, 8633), (2716, 8099), (4361, 5044), (4628, 4753)]