820199385

素因数分解:

$3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:663

約数の個数: 64

約数和(自身を含む): 1485792000

約数和(自身を除く): 665592615

約数列:

[1, 3, 5, 9, 15, 27, 45, 109, 135, 139, 327, 401, 417, 545, 695, 981, 1203, 1251, 1635, 2005, 2085, 2943, 3609, 3753, 4905, 6015, 6255, 10827, 14715, 15151, 18045, 18765, 43709, 45453, 54135, 55739, 75755, 131127, 136359, 167217, 218545, 227265, 278695, 393381, 409077, 501651, 655635, 681795, 836085, 1180143, 1504953, 1966905, 2045385, 2508255, 5900715, 6075551, 7524765, 18226653, 30377755, 54679959, 91133265, 164039877, 273399795, 820199385]

約数ペア:

[(1, 820199385), (3, 273399795), (5, 164039877), (9, 91133265), (15, 54679959), (27, 30377755), (45, 18226653), (109, 7524765), (135, 6075551), (139, 5900715), (327, 2508255), (401, 2045385), (417, 1966905), (545, 1504953), (695, 1180143), (981, 836085), (1203, 681795), (1251, 655635), (1635, 501651), (2005, 409077), (2085, 393381), (2943, 278695), (3609, 227265), (3753, 218545), (4905, 167217), (6015, 136359), (6255, 131127), (10827, 75755), (14715, 55739), (15151, 54135), (18045, 45453), (18765, 43709)]