77881880

素因数分解:

$2^3\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{1907}}^1$

素因数の和:2939

約数の個数: 32

約数和(自身を含む): 175497840

約数和(自身を除く): 97615960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1021, 1907, 2042, 3814, 4084, 5105, 7628, 8168, 9535, 10210, 15256, 19070, 20420, 38140, 40840, 76280, 1947047, 3894094, 7788188, 9735235, 15576376, 19470470, 38940940, 77881880]

約数ペア:

[(1, 77881880), (2, 38940940), (4, 19470470), (5, 15576376), (8, 9735235), (10, 7788188), (20, 3894094), (40, 1947047), (1021, 76280), (1907, 40840), (2042, 38140), (3814, 20420), (4084, 19070), (5105, 15256), (7628, 10210), (8168, 9535)]