21554456

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{3181}}^1$

素因数の和:3216

約数の個数: 48

約数和(自身を含む): 50784720

約数和(自身を除く): 29230264

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 242, 308, 484, 616, 847, 968, 1694, 3181, 3388, 6362, 6776, 12724, 22267, 25448, 34991, 44534, 69982, 89068, 139964, 178136, 244937, 279928, 384901, 489874, 769802, 979748, 1539604, 1959496, 2694307, 3079208, 5388614, 10777228, 21554456]

約数ペア:

[(1, 21554456), (2, 10777228), (4, 5388614), (7, 3079208), (8, 2694307), (11, 1959496), (14, 1539604), (22, 979748), (28, 769802), (44, 489874), (56, 384901), (77, 279928), (88, 244937), (121, 178136), (154, 139964), (242, 89068), (308, 69982), (484, 44534), (616, 34991), (847, 25448), (968, 22267), (1694, 12724), (3181, 6776), (3388, 6362)]