198796540

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{63311}}^1$

素因数の和:63477

約数の個数: 24

約数和(自身を含む): 420138432

約数和(自身を除く): 221341892

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 63311, 126622, 253244, 316555, 633110, 1266220, 9939827, 19879654, 39759308, 49699135, 99398270, 198796540]

約数ペア:

[(1, 198796540), (2, 99398270), (4, 49699135), (5, 39759308), (10, 19879654), (20, 9939827), (157, 1266220), (314, 633110), (628, 316555), (785, 253244), (1570, 126622), (3140, 63311)]