20440539

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^2\times {\mathrm{79}}^1$

素因数の和:169

約数の個数: 48

約数和(自身を含む): 36019200

約数和(自身を除く): 15578661

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 79, 111, 189, 237, 259, 333, 553, 711, 777, 999, 1369, 1659, 2133, 2331, 2923, 4107, 4977, 6993, 8769, 9583, 12321, 14931, 20461, 26307, 28749, 36963, 61383, 78921, 86247, 108151, 184149, 258741, 324453, 552447, 757057, 973359, 2271171, 2920077, 6813513, 20440539]

約数ペア:

[(1, 20440539), (3, 6813513), (7, 2920077), (9, 2271171), (21, 973359), (27, 757057), (37, 552447), (63, 324453), (79, 258741), (111, 184149), (189, 108151), (237, 86247), (259, 78921), (333, 61383), (553, 36963), (711, 28749), (777, 26307), (999, 20461), (1369, 14931), (1659, 12321), (2133, 9583), (2331, 8769), (2923, 6993), (4107, 4977)]