81551988

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{107873}}^1$

素因数の和:107893

約数の個数: 48

約数和(自身を含む): 241637760

約数和(自身を除く): 160085772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 107873, 215746, 323619, 431492, 647238, 755111, 970857, 1294476, 1510222, 1941714, 2265333, 2912571, 3020444, 3883428, 4530666, 5825142, 6795999, 9061332, 11650284, 13591998, 20387997, 27183996, 40775994, 81551988]

約数ペア:

[(1, 81551988), (2, 40775994), (3, 27183996), (4, 20387997), (6, 13591998), (7, 11650284), (9, 9061332), (12, 6795999), (14, 5825142), (18, 4530666), (21, 3883428), (27, 3020444), (28, 2912571), (36, 2265333), (42, 1941714), (54, 1510222), (63, 1294476), (84, 970857), (108, 755111), (126, 647238), (189, 431492), (252, 323619), (378, 215746), (756, 107873)]