128973420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31153}}^1$

素因数の和:31191

約数の個数: 72

約数和(自身を含む): 408242016

約数和(自身を除く): 279268596

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 31153, 62306, 93459, 124612, 155765, 186918, 280377, 311530, 373836, 467295, 560754, 623060, 716519, 934590, 1121508, 1401885, 1433038, 1869180, 2149557, 2803770, 2866076, 3582595, 4299114, 5607540, 6448671, 7165190, 8598228, 10747785, 12897342, 14330380, 21495570, 25794684, 32243355, 42991140, 64486710, 128973420]

約数ペア:

[(1, 128973420), (2, 64486710), (3, 42991140), (4, 32243355), (5, 25794684), (6, 21495570), (9, 14330380), (10, 12897342), (12, 10747785), (15, 8598228), (18, 7165190), (20, 6448671), (23, 5607540), (30, 4299114), (36, 3582595), (45, 2866076), (46, 2803770), (60, 2149557), (69, 1869180), (90, 1433038), (92, 1401885), (115, 1121508), (138, 934590), (180, 716519), (207, 623060), (230, 560754), (276, 467295), (345, 373836), (414, 311530), (460, 280377), (690, 186918), (828, 155765), (1035, 124612), (1380, 93459), (2070, 62306), (4140, 31153)]