19939788

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1171}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 56312256

約数和(自身を除く): 36372468

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 43, 44, 66, 86, 99, 129, 132, 172, 198, 258, 387, 396, 473, 516, 774, 946, 1171, 1419, 1548, 1892, 2342, 2838, 3513, 4257, 4684, 5676, 7026, 8514, 10539, 12881, 14052, 17028, 21078, 25762, 38643, 42156, 50353, 51524, 77286, 100706, 115929, 151059, 154572, 201412, 231858, 302118, 453177, 463716, 553883, 604236, 906354, 1107766, 1661649, 1812708, 2215532, 3323298, 4984947, 6646596, 9969894, 19939788]

約数ペア:

[(1, 19939788), (2, 9969894), (3, 6646596), (4, 4984947), (6, 3323298), (9, 2215532), (11, 1812708), (12, 1661649), (18, 1107766), (22, 906354), (33, 604236), (36, 553883), (43, 463716), (44, 453177), (66, 302118), (86, 231858), (99, 201412), (129, 154572), (132, 151059), (172, 115929), (198, 100706), (258, 77286), (387, 51524), (396, 50353), (473, 42156), (516, 38643), (774, 25762), (946, 21078), (1171, 17028), (1419, 14052), (1548, 12881), (1892, 10539), (2342, 8514), (2838, 7026), (3513, 5676), (4257, 4684)]