389625880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1391521}}^1$

素因数の和:1391539

約数の個数: 32

約数和(自身を含む): 1001895840

約数和(自身を除く): 612269960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1391521, 2783042, 5566084, 6957605, 9740647, 11132168, 13915210, 19481294, 27830420, 38962588, 48703235, 55660840, 77925176, 97406470, 194812940, 389625880]

約数ペア:

[(1, 389625880), (2, 194812940), (4, 97406470), (5, 77925176), (7, 55660840), (8, 48703235), (10, 38962588), (14, 27830420), (20, 19481294), (28, 13915210), (35, 11132168), (40, 9740647), (56, 6957605), (70, 5566084), (140, 2783042), (280, 1391521)]