19976960

素因数分解:

$2^8\times 5^1\times {\mathrm{15607}}^1$

素因数の和:15628

約数の個数: 36

約数和(自身を含む): 47854128

約数和(自身を除く): 27877168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15607, 31214, 62428, 78035, 124856, 156070, 249712, 312140, 499424, 624280, 998848, 1248560, 1997696, 2497120, 3995392, 4994240, 9988480, 19976960]

約数ペア:

[(1, 19976960), (2, 9988480), (4, 4994240), (5, 3995392), (8, 2497120), (10, 1997696), (16, 1248560), (20, 998848), (32, 624280), (40, 499424), (64, 312140), (80, 249712), (128, 156070), (160, 124856), (256, 78035), (320, 62428), (640, 31214), (1280, 15607)]