80865980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 192675840

約数和(自身を除く): 111809860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 79, 124, 127, 130, 155, 158, 254, 260, 310, 316, 395, 403, 508, 620, 635, 790, 806, 1027, 1270, 1580, 1612, 1651, 2015, 2054, 2449, 2540, 3302, 3937, 4030, 4108, 4898, 5135, 6604, 7874, 8060, 8255, 9796, 10033, 10270, 12245, 15748, 16510, 19685, 20066, 20540, 24490, 31837, 33020, 39370, 40132, 48980, 50165, 51181, 63674, 78740, 100330, 102362, 127348, 130429, 159185, 200660, 204724, 255905, 260858, 311023, 318370, 511810, 521716, 622046, 636740, 652145, 1023620, 1244092, 1304290, 1555115, 2608580, 3110230, 4043299, 6220460, 8086598, 16173196, 20216495, 40432990, 80865980]

約数ペア:

[(1, 80865980), (2, 40432990), (4, 20216495), (5, 16173196), (10, 8086598), (13, 6220460), (20, 4043299), (26, 3110230), (31, 2608580), (52, 1555115), (62, 1304290), (65, 1244092), (79, 1023620), (124, 652145), (127, 636740), (130, 622046), (155, 521716), (158, 511810), (254, 318370), (260, 311023), (310, 260858), (316, 255905), (395, 204724), (403, 200660), (508, 159185), (620, 130429), (635, 127348), (790, 102362), (806, 100330), (1027, 78740), (1270, 63674), (1580, 51181), (1612, 50165), (1651, 48980), (2015, 40132), (2054, 39370), (2449, 33020), (2540, 31837), (3302, 24490), (3937, 20540), (4030, 20066), (4108, 19685), (4898, 16510), (5135, 15748), (6604, 12245), (7874, 10270), (8060, 10033), (8255, 9796)]