78947840

素因数分解:

$2^9\times 5^1\times {\mathrm{30839}}^1$

素因数の和:30862

約数の個数: 40

約数和(自身を含む): 189295920

約数和(自身を除く): 110348080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 30839, 61678, 123356, 154195, 246712, 308390, 493424, 616780, 986848, 1233560, 1973696, 2467120, 3947392, 4934240, 7894784, 9868480, 15789568, 19736960, 39473920, 78947840]

約数ペア:

[(1, 78947840), (2, 39473920), (4, 19736960), (5, 15789568), (8, 9868480), (10, 7894784), (16, 4934240), (20, 3947392), (32, 2467120), (40, 1973696), (64, 1233560), (80, 986848), (128, 616780), (160, 493424), (256, 308390), (320, 246712), (512, 154195), (640, 123356), (1280, 61678), (2560, 30839)]