21979010

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{115679}}^1$

素因数の和:115705

約数の個数: 16

約数和(自身を含む): 41644800

約数和(自身を除く): 19665790

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 115679, 231358, 578395, 1156790, 2197901, 4395802, 10989505, 21979010]

約数ペア:

[(1, 21979010), (2, 10989505), (5, 4395802), (10, 2197901), (19, 1156790), (38, 578395), (95, 231358), (190, 115679)]