137780013

素因数分解:

$3^1\times 7^3\times {\mathrm{257}}^1\times {\mathrm{521}}^1$

素因数の和:802

約数の個数: 32

約数和(自身を含む): 215481600

約数和(自身を除く): 77701587

約数列:

[1, 3, 7, 21, 49, 147, 257, 343, 521, 771, 1029, 1563, 1799, 3647, 5397, 10941, 12593, 25529, 37779, 76587, 88151, 133897, 178703, 264453, 401691, 536109, 937279, 2811837, 6560953, 19682859, 45926671, 137780013]

約数ペア:

[(1, 137780013), (3, 45926671), (7, 19682859), (21, 6560953), (49, 2811837), (147, 937279), (257, 536109), (343, 401691), (521, 264453), (771, 178703), (1029, 133897), (1563, 88151), (1799, 76587), (3647, 37779), (5397, 25529), (10941, 12593)]