205113280

素因数分解:

$2^6\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3221}}^1$

素因数の和:3437

約数の個数: 56

約数和(自身を含む): 491032800

約数和(自身を除く): 285919520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 199, 320, 398, 796, 995, 1592, 1990, 3184, 3221, 3980, 6368, 6442, 7960, 12736, 12884, 15920, 16105, 25768, 31840, 32210, 51536, 63680, 64420, 103072, 128840, 206144, 257680, 515360, 640979, 1030720, 1281958, 2563916, 3204895, 5127832, 6409790, 10255664, 12819580, 20511328, 25639160, 41022656, 51278320, 102556640, 205113280]

約数ペア:

[(1, 205113280), (2, 102556640), (4, 51278320), (5, 41022656), (8, 25639160), (10, 20511328), (16, 12819580), (20, 10255664), (32, 6409790), (40, 5127832), (64, 3204895), (80, 2563916), (160, 1281958), (199, 1030720), (320, 640979), (398, 515360), (796, 257680), (995, 206144), (1592, 128840), (1990, 103072), (3184, 64420), (3221, 63680), (3980, 51536), (6368, 32210), (6442, 31840), (7960, 25768), (12736, 16105), (12884, 15920)]