19947888

素因数分解:

$2^4\times 3^2\times {\mathrm{83}}^1\times {\mathrm{1669}}^1$

素因数の和:1766

約数の個数: 60

約数和(自身を含む): 56532840

約数和(自身を除く): 36584952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 83, 144, 166, 249, 332, 498, 664, 747, 996, 1328, 1494, 1669, 1992, 2988, 3338, 3984, 5007, 5976, 6676, 10014, 11952, 13352, 15021, 20028, 26704, 30042, 40056, 60084, 80112, 120168, 138527, 240336, 277054, 415581, 554108, 831162, 1108216, 1246743, 1662324, 2216432, 2493486, 3324648, 4986972, 6649296, 9973944, 19947888]

約数ペア:

[(1, 19947888), (2, 9973944), (3, 6649296), (4, 4986972), (6, 3324648), (8, 2493486), (9, 2216432), (12, 1662324), (16, 1246743), (18, 1108216), (24, 831162), (36, 554108), (48, 415581), (72, 277054), (83, 240336), (144, 138527), (166, 120168), (249, 80112), (332, 60084), (498, 40056), (664, 30042), (747, 26704), (996, 20028), (1328, 15021), (1494, 13352), (1669, 11952), (1992, 10014), (2988, 6676), (3338, 5976), (3984, 5007)]