28387671

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 44126208

約数和(自身を除く): 15738537

約数列:

[1, 3, 13, 17, 39, 47, 51, 141, 221, 611, 663, 799, 911, 1833, 2397, 2733, 10387, 11843, 15487, 31161, 35529, 42817, 46461, 128451, 201331, 556621, 603993, 727889, 1669863, 2183667, 9462557, 28387671]

約数ペア:

[(1, 28387671), (3, 9462557), (13, 2183667), (17, 1669863), (39, 727889), (47, 603993), (51, 556621), (141, 201331), (221, 128451), (611, 46461), (663, 42817), (799, 35529), (911, 31161), (1833, 15487), (2397, 11843), (2733, 10387)]