217772240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{388879}}^1$

素因数の和:388899

約数の個数: 40

約数和(自身を含む): 578653440

約数和(自身を除く): 360881200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 388879, 777758, 1555516, 1944395, 2722153, 3111032, 3888790, 5444306, 6222064, 7777580, 10888612, 13610765, 15555160, 21777224, 27221530, 31110320, 43554448, 54443060, 108886120, 217772240]

約数ペア:

[(1, 217772240), (2, 108886120), (4, 54443060), (5, 43554448), (7, 31110320), (8, 27221530), (10, 21777224), (14, 15555160), (16, 13610765), (20, 10888612), (28, 7777580), (35, 6222064), (40, 5444306), (56, 3888790), (70, 3111032), (80, 2722153), (112, 1944395), (140, 1555516), (280, 777758), (560, 388879)]