638703

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:175

約数の個数: 24

約数和(自身を含む): 1022112

約数和(自身を除く): 383409

約数列:

[1, 3, 9, 13, 39, 53, 103, 117, 159, 309, 477, 689, 927, 1339, 2067, 4017, 5459, 6201, 12051, 16377, 49131, 70967, 212901, 638703]

約数ペア:

[(1, 638703), (3, 212901), (9, 70967), (13, 49131), (39, 16377), (53, 12051), (103, 6201), (117, 5459), (159, 4017), (309, 2067), (477, 1339), (689, 927)]