1971965990

素因数分解:

$2^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{307639}}^1$

素因数の和:308287

約数の個数: 16

約数和(自身を含む): 3555087840

約数和(自身を除く): 1583121850

約数列:

[1, 2, 5, 10, 641, 1282, 3205, 6410, 307639, 615278, 1538195, 3076390, 197196599, 394393198, 985982995, 1971965990]

約数ペア:

[(1, 1971965990), (2, 985982995), (5, 394393198), (10, 197196599), (641, 3076390), (1282, 1538195), (3205, 615278), (6410, 307639)]