1245440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{139}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 3433920

約数和(自身を除く): 2188480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 139, 140, 160, 224, 256, 278, 280, 320, 448, 556, 560, 640, 695, 896, 973, 1112, 1120, 1280, 1390, 1792, 1946, 2224, 2240, 2780, 3892, 4448, 4480, 4865, 5560, 7784, 8896, 8960, 9730, 11120, 15568, 17792, 19460, 22240, 31136, 35584, 38920, 44480, 62272, 77840, 88960, 124544, 155680, 177920, 249088, 311360, 622720, 1245440]

約数ペア:

[(1, 1245440), (2, 622720), (4, 311360), (5, 249088), (7, 177920), (8, 155680), (10, 124544), (14, 88960), (16, 77840), (20, 62272), (28, 44480), (32, 38920), (35, 35584), (40, 31136), (56, 22240), (64, 19460), (70, 17792), (80, 15568), (112, 11120), (128, 9730), (139, 8960), (140, 8896), (160, 7784), (224, 5560), (256, 4865), (278, 4480), (280, 4448), (320, 3892), (448, 2780), (556, 2240), (560, 2224), (640, 1946), (695, 1792), (896, 1390), (973, 1280), (1112, 1120)]