220138919

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 305091360

約数和(自身を除く): 84952441

約数列:

[1, 7, 11, 13, 49, 77, 89, 91, 143, 353, 539, 623, 637, 979, 1001, 1157, 2471, 3883, 4361, 4589, 6853, 7007, 8099, 12727, 17297, 27181, 31417, 32123, 47971, 50479, 56693, 89089, 190267, 219919, 224861, 345587, 353353, 408421, 623623, 1539433, 2419109, 2473471, 2858947, 4492631, 16933763, 20012629, 31448417, 220138919]

約数ペア:

[(1, 220138919), (7, 31448417), (11, 20012629), (13, 16933763), (49, 4492631), (77, 2858947), (89, 2473471), (91, 2419109), (143, 1539433), (353, 623623), (539, 408421), (623, 353353), (637, 345587), (979, 224861), (1001, 219919), (1157, 190267), (2471, 89089), (3883, 56693), (4361, 50479), (4589, 47971), (6853, 32123), (7007, 31417), (8099, 27181), (12727, 17297)]