20488900

素因数分解:

$2^2\times 5^2\times {\mathrm{331}}^1\times {\mathrm{619}}^1$

素因数の和:964

約数の個数: 36

約数和(自身を含む): 44667280

約数和(自身を除く): 24178380

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 331, 619, 662, 1238, 1324, 1655, 2476, 3095, 3310, 6190, 6620, 8275, 12380, 15475, 16550, 30950, 33100, 61900, 204889, 409778, 819556, 1024445, 2048890, 4097780, 5122225, 10244450, 20488900]

約数ペア:

[(1, 20488900), (2, 10244450), (4, 5122225), (5, 4097780), (10, 2048890), (20, 1024445), (25, 819556), (50, 409778), (100, 204889), (331, 61900), (619, 33100), (662, 30950), (1238, 16550), (1324, 15475), (1655, 12380), (2476, 8275), (3095, 6620), (3310, 6190)]