21281792

素因数分解:

$2^{10}\times 7^1\times {\mathrm{2969}}^1$

素因数の和:2996

約数の個数: 44

約数和(自身を含む): 48636720

約数和(自身を除く): 27354928

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1792, 2969, 3584, 5938, 7168, 11876, 20783, 23752, 41566, 47504, 83132, 95008, 166264, 190016, 332528, 380032, 665056, 760064, 1330112, 1520128, 2660224, 3040256, 5320448, 10640896, 21281792]

約数ペア:

[(1, 21281792), (2, 10640896), (4, 5320448), (7, 3040256), (8, 2660224), (14, 1520128), (16, 1330112), (28, 760064), (32, 665056), (56, 380032), (64, 332528), (112, 190016), (128, 166264), (224, 95008), (256, 83132), (448, 47504), (512, 41566), (896, 23752), (1024, 20783), (1792, 11876), (2969, 7168), (3584, 5938)]