205115911

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 284866848

約数和(自身を除く): 79750937

約数列:

[1, 7, 11, 13, 49, 73, 77, 91, 143, 401, 511, 539, 637, 803, 949, 1001, 2807, 3577, 4411, 5213, 5621, 6643, 7007, 10439, 19649, 29273, 30877, 36491, 39347, 46501, 57343, 73073, 204911, 216139, 255437, 322003, 380549, 401401, 511511, 1434377, 2254021, 2663843, 2809807, 4186039, 15778147, 18646901, 29302273, 205115911]

約数ペア:

[(1, 205115911), (7, 29302273), (11, 18646901), (13, 15778147), (49, 4186039), (73, 2809807), (77, 2663843), (91, 2254021), (143, 1434377), (401, 511511), (511, 401401), (539, 380549), (637, 322003), (803, 255437), (949, 216139), (1001, 204911), (2807, 73073), (3577, 57343), (4411, 46501), (5213, 39347), (5621, 36491), (6643, 30877), (7007, 29273), (10439, 19649)]