278319665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 407586816

約数和(自身を除く): 129267151

約数列:

[1, 5, 13, 17, 23, 47, 65, 85, 115, 221, 233, 235, 299, 391, 611, 799, 1081, 1105, 1165, 1495, 1955, 3029, 3055, 3961, 3995, 5083, 5359, 5405, 10387, 10951, 14053, 15145, 18377, 19805, 25415, 26795, 51493, 51935, 54755, 69667, 70265, 91103, 91885, 142363, 186167, 238901, 251873, 257465, 348335, 455515, 711815, 930835, 1184339, 1194505, 1259365, 2420171, 3274349, 4281841, 5921695, 12100855, 16371745, 21409205, 55663933, 278319665]

約数ペア:

[(1, 278319665), (5, 55663933), (13, 21409205), (17, 16371745), (23, 12100855), (47, 5921695), (65, 4281841), (85, 3274349), (115, 2420171), (221, 1259365), (233, 1194505), (235, 1184339), (299, 930835), (391, 711815), (611, 455515), (799, 348335), (1081, 257465), (1105, 251873), (1165, 238901), (1495, 186167), (1955, 142363), (3029, 91885), (3055, 91103), (3961, 70265), (3995, 69667), (5083, 54755), (5359, 51935), (5405, 51493), (10387, 26795), (10951, 25415), (14053, 19805), (15145, 18377)]