208347957

素因数分解:

$3^5\times {\mathrm{67}}^2\times {\mathrm{191}}^1$

素因数の和:340

約数の個数: 36

約数和(自身を含む): 318479616

約数和(自身を除く): 110131659

約数列:

[1, 3, 9, 27, 67, 81, 191, 201, 243, 573, 603, 1719, 1809, 4489, 5157, 5427, 12797, 13467, 15471, 16281, 38391, 40401, 46413, 115173, 121203, 345519, 363609, 857399, 1036557, 1090827, 2572197, 3109671, 7716591, 23149773, 69449319, 208347957]

約数ペア:

[(1, 208347957), (3, 69449319), (9, 23149773), (27, 7716591), (67, 3109671), (81, 2572197), (191, 1090827), (201, 1036557), (243, 857399), (573, 363609), (603, 345519), (1719, 121203), (1809, 115173), (4489, 46413), (5157, 40401), (5427, 38391), (12797, 16281), (13467, 15471)]