209719658

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 335819520

約数和(自身を除く): 126099862

約数列:

[1, 2, 23, 46, 71, 142, 157, 314, 409, 818, 1633, 3266, 3611, 7222, 9407, 11147, 18814, 22294, 29039, 58078, 64213, 128426, 256381, 512762, 667897, 1335794, 1476899, 2953798, 4559123, 9118246, 104859829, 209719658]

約数ペア:

[(1, 209719658), (2, 104859829), (23, 9118246), (46, 4559123), (71, 2953798), (142, 1476899), (157, 1335794), (314, 667897), (409, 512762), (818, 256381), (1633, 128426), (3266, 64213), (3611, 58078), (7222, 29039), (9407, 22294), (11147, 18814)]