261617992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 530712000

約数和(自身を除く): 269094008

約数列:

[1, 2, 4, 8, 19, 38, 76, 83, 89, 152, 166, 178, 233, 332, 356, 466, 664, 712, 932, 1577, 1691, 1864, 3154, 3382, 4427, 6308, 6764, 7387, 8854, 12616, 13528, 14774, 17708, 19339, 20737, 29548, 35416, 38678, 41474, 59096, 77356, 82948, 140353, 154712, 165896, 280706, 367441, 394003, 561412, 734882, 788006, 1122824, 1469764, 1576012, 1721171, 2939528, 3152024, 3442342, 6884684, 13769368, 32702249, 65404498, 130808996, 261617992]

約数ペア:

[(1, 261617992), (2, 130808996), (4, 65404498), (8, 32702249), (19, 13769368), (38, 6884684), (76, 3442342), (83, 3152024), (89, 2939528), (152, 1721171), (166, 1576012), (178, 1469764), (233, 1122824), (332, 788006), (356, 734882), (466, 561412), (664, 394003), (712, 367441), (932, 280706), (1577, 165896), (1691, 154712), (1864, 140353), (3154, 82948), (3382, 77356), (4427, 59096), (6308, 41474), (6764, 38678), (7387, 35416), (8854, 29548), (12616, 20737), (13528, 19339), (14774, 17708)]