209213275

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{10243}}^1$

素因数の和:10315

約数の個数: 24

約数和(自身を含む): 279456320

約数和(自身を除く): 70243045

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1075, 4085, 10243, 20425, 51215, 194617, 256075, 440449, 973085, 2202245, 4865425, 8368531, 11011225, 41842655, 209213275]

約数ペア:

[(1, 209213275), (5, 41842655), (19, 11011225), (25, 8368531), (43, 4865425), (95, 2202245), (215, 973085), (475, 440449), (817, 256075), (1075, 194617), (4085, 51215), (10243, 20425)]