19878940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52313}}^1$

素因数の和:52341

約数の個数: 24

約数和(自身を含む): 43943760

約数和(自身を除く): 24064820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52313, 104626, 209252, 261565, 523130, 993947, 1046260, 1987894, 3975788, 4969735, 9939470, 19878940]

約数ペア:

[(1, 19878940), (2, 9939470), (4, 4969735), (5, 3975788), (10, 1987894), (19, 1046260), (20, 993947), (38, 523130), (76, 261565), (95, 209252), (190, 104626), (380, 52313)]