81341680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145253}}^1$

素因数の和:145273

約数の個数: 40

約数和(自身を含む): 216137952

約数和(自身を除く): 134796272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145253, 290506, 581012, 726265, 1016771, 1162024, 1452530, 2033542, 2324048, 2905060, 4067084, 5083855, 5810120, 8134168, 10167710, 11620240, 16268336, 20335420, 40670840, 81341680]

約数ペア:

[(1, 81341680), (2, 40670840), (4, 20335420), (5, 16268336), (7, 11620240), (8, 10167710), (10, 8134168), (14, 5810120), (16, 5083855), (20, 4067084), (28, 2905060), (35, 2324048), (40, 2033542), (56, 1452530), (70, 1162024), (80, 1016771), (112, 726265), (140, 581012), (280, 290506), (560, 145253)]