211572040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{123007}}^1$

素因数の和:123061

約数の個数: 32

約数和(自身を含む): 487111680

約数和(自身を除く): 275539640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 123007, 246014, 492028, 615035, 984056, 1230070, 2460140, 4920280, 5289301, 10578602, 21157204, 26446505, 42314408, 52893010, 105786020, 211572040]

約数ペア:

[(1, 211572040), (2, 105786020), (4, 52893010), (5, 42314408), (8, 26446505), (10, 21157204), (20, 10578602), (40, 5289301), (43, 4920280), (86, 2460140), (172, 1230070), (215, 984056), (344, 615035), (430, 492028), (860, 246014), (1720, 123007)]