211050020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{245407}}^1$

素因数の和:245459

約数の個数: 24

約数和(自身を含む): 453513984

約数和(自身を除く): 242463964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 245407, 490814, 981628, 1227035, 2454070, 4908140, 10552501, 21105002, 42210004, 52762505, 105525010, 211050020]

約数ペア:

[(1, 211050020), (2, 105525010), (4, 52762505), (5, 42210004), (10, 21105002), (20, 10552501), (43, 4908140), (86, 2454070), (172, 1227035), (215, 981628), (430, 490814), (860, 245407)]