71979921

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4021}}^1$

素因数の和:4063

約数の個数: 40

約数和(自身を含む): 122638824

約数和(自身を除く): 50658903

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 459, 663, 1053, 1377, 1989, 4021, 5967, 12063, 17901, 36189, 52273, 68357, 108567, 156819, 205071, 325701, 470457, 615213, 888641, 1411371, 1845639, 2665923, 4234113, 5536917, 7997769, 23993307, 71979921]

約数ペア:

[(1, 71979921), (3, 23993307), (9, 7997769), (13, 5536917), (17, 4234113), (27, 2665923), (39, 1845639), (51, 1411371), (81, 888641), (117, 615213), (153, 470457), (221, 325701), (351, 205071), (459, 156819), (663, 108567), (1053, 68357), (1377, 52273), (1989, 36189), (4021, 17901), (5967, 12063)]