19778493

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 31887360

約数和(自身を除く): 12108867

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 691, 987, 1363, 2073, 4089, 4837, 9541, 14511, 20039, 28623, 32477, 60117, 97431, 140273, 227339, 420819, 682017, 941833, 2825499, 6592831, 19778493]

約数ペア:

[(1, 19778493), (3, 6592831), (7, 2825499), (21, 941833), (29, 682017), (47, 420819), (87, 227339), (141, 140273), (203, 97431), (329, 60117), (609, 32477), (691, 28623), (987, 20039), (1363, 14511), (2073, 9541), (4089, 4837)]