7978940

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1789}}^1$

素因数の和:2021

約数の個数: 24

約数和(自身を含む): 16840320

約数和(自身を除く): 8861380

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 1789, 2230, 3578, 4460, 7156, 8945, 17890, 35780, 398947, 797894, 1595788, 1994735, 3989470, 7978940]

約数ペア:

[(1, 7978940), (2, 3989470), (4, 1994735), (5, 1595788), (10, 797894), (20, 398947), (223, 35780), (446, 17890), (892, 8945), (1115, 7156), (1789, 4460), (2230, 3578)]