208090071

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{661}}^1$

素因数の和:956

約数の個数: 48

約数和(自身を含む): 363517440

約数和(自身を除く): 155427369

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 263, 399, 661, 789, 1197, 1841, 1983, 2367, 4627, 4997, 5523, 5949, 12559, 13881, 14991, 16569, 34979, 37677, 41643, 44973, 87913, 104937, 113031, 173843, 263739, 314811, 521529, 791217, 1216901, 1564587, 3303017, 3650703, 9909051, 10952109, 23121119, 29727153, 69363357, 208090071]

約数ペア:

[(1, 208090071), (3, 69363357), (7, 29727153), (9, 23121119), (19, 10952109), (21, 9909051), (57, 3650703), (63, 3303017), (133, 1564587), (171, 1216901), (263, 791217), (399, 521529), (661, 314811), (789, 263739), (1197, 173843), (1841, 113031), (1983, 104937), (2367, 87913), (4627, 44973), (4997, 41643), (5523, 37677), (5949, 34979), (12559, 16569), (13881, 14991)]