81572589

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3061}}^1$

素因数の和:3127

約数の個数: 40

約数和(自身を含む): 142272768

約数和(自身を除く): 60700179

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 987, 1269, 2961, 3061, 3807, 8883, 9183, 21427, 26649, 27549, 64281, 82647, 143867, 192843, 247941, 431601, 578529, 1007069, 1294803, 1735587, 3021207, 3884409, 9063621, 11653227, 27190863, 81572589]

約数ペア:

[(1, 81572589), (3, 27190863), (7, 11653227), (9, 9063621), (21, 3884409), (27, 3021207), (47, 1735587), (63, 1294803), (81, 1007069), (141, 578529), (189, 431601), (329, 247941), (423, 192843), (567, 143867), (987, 82647), (1269, 64281), (2961, 27549), (3061, 26649), (3807, 21427), (8883, 9183)]