20713788

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13381}}^1$

素因数の和:13434

約数の個数: 36

約数和(自身を含む): 53581528

約数和(自身を除く): 32867740

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13381, 26762, 40143, 53524, 80286, 120429, 160572, 240858, 481716, 575383, 1150766, 1726149, 2301532, 3452298, 5178447, 6904596, 10356894, 20713788]

約数ペア:

[(1, 20713788), (2, 10356894), (3, 6904596), (4, 5178447), (6, 3452298), (9, 2301532), (12, 1726149), (18, 1150766), (36, 575383), (43, 481716), (86, 240858), (129, 160572), (172, 120429), (258, 80286), (387, 53524), (516, 40143), (774, 26762), (1548, 13381)]